Because you wouldn’t be actually switching so that’s not lock-in, that’s just you expecting free stuff forever.
Anyway, I understand your point. I also want free stuff and I also want all my free stuff to be exactly what I need. My criticism is more than you selecting a provider, not paying for it, know what the problem is then complain it’s not what you need despite knowing it in advance. What also was problematic for me is that your title is not correct.
Finally, maybe you are technically right (which I do not believe) but you can see from the total number of downvotes to your post and the upvotes on my comments that, at least in this community, your interpretation is being quite criticized.
To end on a pragmatic note : please PLEASE do get funding (it does not have to be your own money) for Proton to provide forwarding for free for all email addresses. I’m sure nobody on this community would complain about that, I surely won’t!
PS: if you are into lock-in and tech, consider reading “Information Rules: A Strategic Guide to the Network Economy” by Carl Shapiro and Hal R. Varian - ISBN 087584863X - Harvard Business Press 1998 and if it’s a bit too much here are my notes on it https://fabien.benetou.fr/ReadingNotes/InformationRules written 15 years ago.
You do not have to care. I’m only highlighting that according to this community your post is precisely not “informing” much.
Also while checking your history https://lemmy.ml/post/19526546 it seems to be a pattern of misunderstanding then blaming it on others.
I guess that’s what not arguing over petty details like “technical definitions” might result in.
Please do not use Proton if you do not think it’s appropriate for your usage. Please do inform others about problems you do encounter. Please do note though that when you are misrepresenting the situation, e.g. with titles that are shortcuts and thus incorrect, you are NOT helping.