Why waste your time and risk your KYC data on the shitcoins? when you can actually easily understand and hodl Bitcoin which is safer and decentralized. Don't be deceived that such coins in the future will turn out to be like Bitcoin.
There are many scam projects out there so make sure to research and most importantly avoid KYC.
Remember don't forget to keep your keys safe!!
It seems that you don't know the level of misinformation that is given newbies outside this forum in this cryptocurrency industry. The level of misinformation is alarming. Most times the misinformers are not well informed and in some rare cases they misinform newbies deliberately in order to feast on their ignorance. Will it interest you that I met bitcoin when the price was at the range of $8k but someone who introduced me to bitcoin told me that bitcoin was already high in price that I should instead buy some random shitcoins that will give me alot of profits. Assuming I was privileged to receive a good advice, I would have accumulated upto .5 BTC which had worth more than $30k at a point and it's worth about $20k currently.
So, if newbies are not well schooled, they won't see it as a big deal to submit their data on random platforms with the promise to receive free coins in the name of airdrop. Information is power and whoever is not informed, would definitely be deformed and whoever that is deformed will of course not perform.
In any case your other points are valid. These scammers rely on the greed of people to get their shitcoin pumped and dumped so that THEY can make a lot of profit as the rest of the participants are only gambling with their hard earned money.
The KYC scam that became popular during 2017 ICO craze is their way of maximizing their profit by selling "gamblers" personal information on darknet.
Funny enough, the dream of becoming overnight millionaire is becoming stronger than becoming genuinely rich with a well known and thought out process. The in-built insatiable nature of man is leading him to a perpetual doom.