May hear sounds differently - OF course it does. To me, everything sounds perfectly natural. I have a lot more clarity and high frequency abilities. I can hear crickets...where I couldn't before. This is where all the training comes in.
May lose residual hearing - for someone who has a CI, may not care too much about having residual hearing (I know there's some CI users that is grateful for that). I still have residual hearing in both ears and they're the same level as pre-CI.
May have unknown or uncertain effects - This is pretty rare. I know someone who had a perfect implant yet it didn't work just right...she got reimplanted and she's happy.
May not hear as well as others - that is all has to do with previous experiences with HA's. For someone who never wore HA's may have a harder time because there's sound all over the place. For someone who was hearing for a long time and suddenly became deaf, will have a much easier time. So, it varies from person to person. That is why we always say, "Low expectations, High hopes." Some of the CI users I know hasn't really reached the full potential of having the CI, so they don't care too much about anything but hearing so they don't bother doing the training and trying out different programming.
May not able to understand language well - again, this kind of falls in the drive and motivation to learn. If you don't learn or have the drive, then you won't be as successful. It also has to do with previous experiences pre-CI.
May have to have it removed - This is true, but again, it's RARE!
Implant failure - again - RARE...and many are willing to get it reimplanted.
May not be able to upgrade - Cochlear's products has been backward compatible for years, and the newest processor can be used on a 10 year old implant, even 15 year old implants. AB's products in the current state will be backward compatible (implant users 10 years ago cannot use the Harmony currently, but it seems that AB is working on it or something). Same goes for Med-El.
May not have some medical examination - The doctors will have to find other ways around getting the tests done. There are people with pacemakers, titianum rods in their bodies, etc...so there *are* other ways. We can still go under MRI, but we just need to have a simple surgery to remove the magnet (NOT the implant). It would be very rare for any of us to have the implant removed because a specific medical examination MUST be used.
Will depend on batteries - nope. Only Cochlear has disposable batteries in BTE (Body worn processors for all three companies take regular AA batteries). How is this any different than having HA's?
May Damage their implant - Protection Protection Protection
May Find them expensive - that's what insurance are for. For someone who loves their CI will find a way, no question about it.
Lifestyle changes - I find it funny if i do set off the alarms. To this day I haven't set off any alarms...shucks. you do not need to "turn off CI" for Airplane rides. People do it anyways because it can wipe the map, but that's not even a big deal. It doesn't ruin the CI.
Static Electricity - all it does it has the potential to ruin the programming. I live in such a dry state and I get static electricity all the time, I have not yet experienced any problems. I think it's just an issue for children and plastic slides...I don't know.
Less ability to hear - this is where all the fancy programming takes place. We get used to the programming that our head needs 'more input'.
May develop irritation - it does happen, but I think if someone used a better magnet (weaker), it won't be irritated.
Can't let external parts get wet - AB and Cochlear is water resistant.
May hear strange sounds - Same thing goes for HA's. It's not CI specific.
I hope you learned some things and facts. I'm not trying to sugar coat CIs. I respect people's opinions about them and will not tell them otherwise, but if they do not know all the facts and just look at sources like these and say, OMG look at all the risks...it's really not. That's why everyone MUST do the research beforehand and learn about the CI before getting it. I also am not saying that there's NO risk at all. The article you mentioned has all the risk that people should know beforehand, because if they get the CI then say, "Oh I didn't know that!!", they rather know every little thing. I'm just merely stating why there are risks, how it can be avoided, and when it's really not a huge risk.