It's wasn't the Welsh league, it wasn't the wordle colours and, more pertinently, it was all a bit "ha ha ha they talk funny" really. Very low humour. I'm not at all surprised someone took offence. It's one thing to ban Welsh language posts on here due to lack of moderators, but it's another level of hostility to ridicule its linguistic community IMO.
Edit to add: slurs against groups of people based on negative-stereotyping are specifically mentioned in
the rules as trolling, so I'm surprised the mods even hesitated... and that a football thread hasn't been locked, because so many of its "fan" insults of other clubs are based on that!