Over a year ago, I asked a question on this topic that was well received (+9 votes). But, as I haven't answered any questions in either of these tags, my answer score is still 0. It's a relatively unpopular topic, so gaining the required answer score is unlikely to happen anytime soon.
So I can't prepose the synonym.
I don't really understand why I'm still not allowed to do this;
Wouldn't it be beneficial if question scores could be added into the count for allowing tag synonym proposals?