Personally, I feel updates were a much bigger deal back in the Gingerbread and ICS days. I think we can all admit that since JellyBean, thing are just generally better with newer versions being smaller steps forward. The two other factors that make me less worried, is also that Google seems to be moving more and more platform related functions to Google Play Services, which gets updated independent of the OS version, and Google also seems to be pushing manufacturers to push out new versions in a reasonable time frame. Ultimately, we'd all like the choice of being on the latest version, but we can all admit that being on the very latest versions, even directly from Google can have problems, so it's all a give and take.
TLDR: no.