This feels like the wrong way to look at things. It's not that it's "difficult" to switch from React/Vue to htmx - it's that it's easier to build with htmx in the first place. I wouldn't throw out completed code, but I'd seriously consider using it next time you start something new.
The general philosophy is that "React etc are great for some things, but they are being used way outside of their sweet spots". There will always be a gray area - and your existing habits and skills are also a factor but for some of us - the "SPA framework" approach always smelt fishy for typical web builds.
The general philosophy is that "React etc are great for some things, but they are being used way outside of their sweet spots". There will always be a gray area - and your existing habits and skills are also a factor but for some of us - the "SPA framework" approach always smelt fishy for typical web builds.