Bounties coins are new and listed in small exchanges , sometimes only in dex. We are talking about those coins which are listed in big exchanges like Binance, Kucoin. These coins rising speed is much better then any other coins, sometimes 10x in just 2 days but I agree that if price not rised then these low cap coins are behaving like a dead coin and holders have to wait long (more then six months) for any breakup. Low risks coins are better choice to invest in bear market.
OP didn't describe it specifically whether the old altcoins on top exchanges or new altcoins on DEX/small exchanges. I assume both old altcoins and new altcoins that have low market caps, can be included in this discussion.
Yes, the altcoins got from bounties sometimes are listed on DEX only. In many cases, the developers said it is the early of their listing stage, they will list on CEX in the future. Sadly, after few years there are altcoins bounties that are never listed on CEX. The developers lied to the investors, they disappear. I already experienced it several times. So, it is actually difficult to believe in new altcoins anymore.
Regarding low cap altcoins on top exchanges, I am aware that there are some of them rising quickly but it also drop in a short time. They are like meme coins which is rising because of the hype only. It can increase during the good news through the project. But it drops again quickly when the hype of the good news is over.