Do you think that bitbucket or github are any better ? Who is to say
that some minutes down the road they will not do the same.

I cannot vouch, that any commercial service will not do the same of
course. Github e.g. stopped supporting downloads of binaries a few
months ago.

It would not be much work to setup mirrors for hosting the code, and in
any event migrate to yet another service, but there are other things to
consider: There is the bug tracker that is hosted by Sourceforge, then
binaries, people and their accounts and access rights, etc.

bug tracker is certainly an issue and will just take work to migrate it
somewhere.