I would not worry to much updatess takes place typicaly the first year of a Product with 2-5 year life expectency then dwindel of if no serius thing happens. I bought My 3 weeks ago and was suppirced they exited But talked to Customer support In EU and they Even sendt me a Confirmation Mail off continued support
I spoke with customer service rep today. They said that they will still support repairs, replacements, and software updates to the current Karmas. I purchased GoPro care recently and asked them if they would support the drone replacement for the next two years and he seemed confident that they would.
I have only had to do one update since I bought my in December. But... lets be realistic here, this is technology. It doesn't matter what Drone you purchase, there are going to be updates. The updates however are to help your equipment run and operate better and safer, so... you can complain all you want about the Karma updates, but you're going to have those regardless of the manufacturer