I think we can only connect Elon Musk with Bitcoin and Dogecoin. For other coins, I don't know he actually involves in. Maybe he made funny tweets and market makers us them to pump those shit coins. If Elon tweets FUN, people will search on the market to find what is a FUN token/ coin?
I have checked quickly what are google trends for "Fun token" phrase:
https://trends.google.com/trends/explore?date=today%205-y&q=FUN%20tokenIt does not look good. What is has in common with "Sentosa - Island in Singapore" topic?
Africa is completely gray, except Nigeria. Post-CCCP republics too.
Personally I think paying to some "influencers" from youtube or instagram world could have positive effect, at least more people would realize something like FUN or freebitco exists.