I think Semux is a underdog compared to waves/eos/stratis
the eco system of semux is quite small, it is very experimental (which crypto is not..., though)
it needs some time, but devs are doing a good job! Look at the github repo, there are many commits!
The good news is SEMUX team have been very actively in their works to upgrade the github.
It is one of positive signals of good projects.
Of course, I agree with your opinion that the project needs more time to be recognised widely in crypto world.