@leocg It would enhance the user-friendliness of the website. Wordpress Zoho Forums are a few other examples which ensure this Accessibility feature is honored.
You should either copy and paste a selection or post a screenshot - while I only read 2 languages I can identify all the major ones on sight.
But the first thing to check is Setting > Languages. Second thing - some websites will second-guess if you are using the VPN, the most common guess seems to be Ukrainian.
As I'm sure you noticed, new users posts must be approved by a moderator. Possibly that's why your comment didn't work - at the time you weren't a forum member.
Yes you are right every post is moderated on a high quality blog like this one.