Do you miss phones with replaceable batteries? By 2027, you won’t anymore because, by law, almost every smartphone will have them again.
Hell, I have a laptop that’s over 10 years old. It isn’t officially supported on Windows 11, but I’m sure I could get it on there in some unsupported way, using Rufus or another tool that removes the TPM requirements and have it be usable and secure. It runs Windows 10 without complaints. I can run an up to date Linux distro on it and be completely up to date and secure. So, like you said, why can’t phones do the same?