Hi Piotr,
No - it's a nuisance. In this instance, it's an isolated nuisance - one VPS host in OVH.net which may be misconfigured, accidentally
or purposefully. Listmasters are aware - several of us have contacted them. It's an annoyance (much as when old-style spammers used
to harvest email addresses to apparently send spam from): it will go away again.
Forums work for some people, they don't for others - people have very different styles. Email is fairly readily mirrored, very searchable,
compresses well and the mailing lists are threaded. I can find mailing list postings from 23 years ago fairly readily - I can't find
posts on some forums from three months ago. As ever: Your ideal solution may be somebody else's hell (and vice versa) and people can argue
merits either way until they're blue in the face with no absolute conclusion.