Not rude at all, as long as you add something useful instead of just bumping. I have done it a few times on community boards and the response is usually friendly when the new post actually moves the conversation forward. If the thread is six months old and you only write "same problem here," that can feel like noise. But if you say "I tried the fix on page one, still stuck on the loading screen, here is my error log," people appreciate the context.
It also covers XL live arcade games and play Pragmatic Play slots online in practical terms.
A few practical habits help. Check the thread date before replying, and mention that you know it is old but the issue persists. That small acknowledgment goes a long way. Also look at whether the original poster is still active. If they have not logged in for a year, you might get better results starting a fresh thread and linking back to the old one. Moderators often prefer that over resurrecting a dead discussion.
One thing I have learned from reading forum etiquette guides, including some on digital wellbeing, is that a clear title update or a new reply with specific details beats vague bumps every time. For example, if you are troubleshooting a game client or a payment flow, name the version and the exact step that fails. That is the kind of post people actually want to answer.
So no, it is not rude. It is only unhelpful when you treat the old thread like a chat room instead of a knowledge base. Add value, be specific, and the community will usually meet you halfway.