I agree it’s good that he didn’t try to implement martial law. Elections have been contested before, and will be again. The precedent of the disputed states and electors of 1876 is what should have been followed, however it was not, and that is what should be left for debate.
Martial law would have been considered extreme in almost any possible scenario, and thankfully only a few of his supporters were actually calling for it.. As bad as the situation is now, it would be significantly worse had that option been tried, whether Trump held on to power or not.
Not to mention there’s no authority for martial law if there is a functioning civilian court system. Disagreeing with such courts is not a reason for martial law.
It may be a reason to launch a needed revolution or civil war, but that transcends martial law.