I don't really like linking to alternative frontends. It actually makes it harder for people to decide for themselves. If I use extensions that redirect Twitter

I don't really like linking to alternative frontends. It actually makes it harder for people to decide for themselves. If I use extensions that redirect Twitter to my preferred Nitter instance hard-coding a Nitter link makes it worse for me. I feel the same way about people linking to old.reddit.com. I have configured Reddit to use the old UI automatically on desktop but on mobile I find the new UI the best of the awful options. However the old links still use the old UI because it was explicitly requested. Basically the canonical URL serves as a consistent identifier, and the reader can choose how it opens. By linking to alternatives that you prefer you are depriving the power-user reader that choice to apply their preference. So I think we should use canonical URLs most of the time (especially for popular sites) because I value viewers preferences more than submitters preferences or a better default.