"...we see some meme coins as vampire attacks to BTC or others?"
I recently saw a video from a well-known crypto booster that mentioned two memecoins with extremely low market caps touting their potential for K%'s of rise with but a few folks jumping on the bandwagon - which surely happened as a result of the shout out on his widely watched content.
Classic pump and dump in the wake of Monero delisting (almost banning) that limited the upside from the more established coin.
There's basically two strategies crypto investors generally fall into: buy and HODL, or pump and dump speculation. Given the hostility to privacy coins (and privacy generally) that is being realized lately, investors are being forced into the latter camp. This is not good for the market in the long run, even if savvy pumpers can snag large windfalls in the short term when they well-time their dumps.