It's not really a direct security advantage, so this is mostly off-topic, but changing the default port does greatly reduce log noise, and theoretically could b

It's not really a direct security advantage, so this is mostly off-topic, but changing the default port does greatly reduce log noise, and theoretically could be a bit less taxing for your network connection or CPU if it's a cheap server not intended for publicly hosting services. (If it is then the traffic would be a drop in the bucket compared to regular production traffic, though. And it's admittedly probably a drop in the bucket either way.) Reducing log clutter alone probably does confer some small indirect benefit, since it's less likely a more sophisticated attempt or successful breach would go unnoticed when inspecting logs. (Assuming there's some SIEM log forwarding or that it's not a situation where an attacker was able to or wise enough to wipe logs.)