If there is hype around any sphere, developers pick up this wave and try to create something similar. More often it is going to be a scam and people that are attracted by the similar name and have FOMO, start investing without doubting. Actually, it is a bad way of working, it is much better to do your own research and look for something new but not trendy so far.
Coins with almost the same name and just doing a similar concept to the ones that already exist are scams and very bad to choose from, and in this case I totally agree with what you are saying because of all the tokens that are served up, most of them are fake ones adopted the name Shiba, and that was just to attract everyone who didn't know it.