There are plenty of scams on the OTC for sure but I've been trading OTC stocks for decades and can tell you that there are gems out there you just have to find them.
I have owned several microcaps / penny stocks that paid me dividends. In fact I have three microcaps right now that are paying me dividends. (the higher market cap of the 3 is around $20 million)
I'll mention the one that just announced the divy. Now, mind you the stock is around $5.50 but I was buying it as low as .07 cents prior the them doing a 30/1 reverse split (so post split price of lowest cost shares were around $2.10 ish)
THE MARKET CAP IS ONLY ~ $5.5 MILLION
-- I get my first dividend of .125 next month and 3 more of the same following quarterly (that's just under 10% yield at current price -- and much HIGHER -- almost 15% -- on my cost avg which is in the low $3's)
Anyway not saying it to tout the stock -- just saying. I have owned many good microcap OTC stocks over the years. Many were bought out. But truth be told, I've made the most money on reverse mergers.
I'm fairly conservative (I have 6 children and 11 grandchildren) so I do my best not to be a wastrel when I put my money in the market.