I as well as other people on here, have had to reinstall preserved collection, that's why dovetail really do need to bring NEC and ALL TSW 2020 content to TSW 2 even if it means making that content from scratch. That way, uninstalling TSW 2020 would be without disadvantages and you wouldn't have the conflict between the games going on. Ideally then, you would have TSW 2 renamed to TSW indefinitely but just receive updates and new content and eventually maybe get rid of the preserved collection logos and just streamline everything, one game for everything.
Yes, I want to uninstall 2020 but I like NEC. It's not on the roadmap for TSW2 so who knows if it will ever be rebuilt.