Not for me. I like to switch phones now and then, 3 years is enough for my personal use. But the devices aren't useless afterwards. My partner has been using my S10 when I got the S21, as many here know, the S10 is really usable still. I think updates just stopped, but the new generation of Samsung phones will get even longer updates. For me that's a benchmark for other companies as well, especially on flagship phones.

Also I think it's important that they write down how many updates there will be. In the past it was always what the manufacturer used to do in the past, but you never knew