True but bitcoin has always been offering lesser risks but some still prefer to invest in altcoins and we know most of this liquidation definitely comes from altcoin and so just better to let them know even in the altcoins HODLing is still better though is just for them to do more research and hope they investing in the right one or just stick with bitcoin.
Also for me, HODLing altcoin as a shorter spam which can be 6 months to 2 years while Bitcoin for as long as you would like.
It didn't take upto 2 years for TerraUSD ($UST), Luna and some other altcoin that were big marketcap altcoins to crash to almost zero. Some altcoins get launched with so much hype and they got rug pulled before the week ended. Hodling alcoins are not better you're not guaranteed any profits with altcoins but you might be lucky with your picks. As said previously, altcoins are pure gamble, Instead of visiting the casinos something I play with some altcoins but I know what I'm doing is gambling and not investment.
When you're talking about proper research, I ask again what are you researching on? When looking at track records of the people involved in the project usually for those with so much potential before it comes to the limelight the price of the tokens are already too high and making profits for mostly the private Investors. Just HODLing should be said with only Bitcoin, you're guaranteed an increase (in some way) when you hodl Bitcoin, without any further development just because of the Halving effect you're set for life but altcoins doesn't have the same assurance.