A Windows 7 system that is Internet connected is no longer receiving Microsoft updates, and thus has increased susceptibility to undiscovered malware. This means that a Windows 7 PC that is Internet connected isn't just a risk for the end user. It's a risk for everyone, because unpatched and vulnerable Windows 7 systems are more likely to become BotNet hosts and be used in DDoS attacks on hospitals, airports, and corporations on which we all depend. Just because you can do something, that doesn't mean that you should.
IMO older computers that would struggle to run Windows 10 (and which can't run Windows 11) should migrate to a Linux distro.