This is a big one for me. When I stopped using Google, it delivered better results than the alternatives, but I still switched for privacy reasons. However, recently I sat at another person's PC, which used Google by default and man, those results are hideous. Not only are the first few results ads; but also visually pretty well disguised. And lots of the actual results are totally trash and obviously paid to get those high rankings. While not actually being labelled as ads at all!
I can see how it's easy to misclick on some of those when looking for innocent stuff.

However - and I'm making an assumption here - it also depends what you're searching for. While this should all be common sense, obviously when looking for example for cracked software and other kinds of piracy, the probability is higher that someone is going to try to grab your money another way. I sincerely doubt you will get scammer links when sincerely looking just for recipes or technical questions online. Of course I can only judge this as someone using DuckDuckGo and Startpage; it's possible that Google will show you scam links in top positions when looking for recipes. But on the engines I use, I would almost guarantee the results are clean.

Also, after a while on the net, you should already see from the URL if it's something familiar, normal-looking or if it looks fishy. Like, the actual domain name, for instance. Above all search results (also in Google; just checked via Incognito window), you see it; and you also see the whole link when hovering.

Long story short: this should all be considered standard, basic precautions when surfing the web; but I guess some people don't want to bother. Then it's on them.

I also agree that a few extensions like uBlock Origin and HTTPS Everywhere are adviseable; some scammer sites don't get a certificate (or don't want to - since usually proof of ID is needed) and Origin removes some scammy shit like ads on Google by default, I think. Depends on your lists. Of course also great for privacy due to tracker blocking, but that's another story.

He already said that he invests heavily in shitcoins so shitty that Ledger doesn't even have apps for them in their list of 1300+ coins.
It also seems like he just has a ton of different coins and I just discovered the other day that you can basically just install a handful of coins onto a Ledger Nano S, even if it 'supports' hundreds.

To be honest, if you're dabbling with these kinds of coins; while it's not my topic of interest, from what I know, these are used as very-short-term investments. Meaning, you buy a bunch, if they skyrocket, you insta-sell and then go to the next one. So, while I'm super duper pro-cold storage, hardware wallets, and all that; it may be financially smarter to keep them on an exchange so you can sell quicker. It also seems to me that a (reputable!!!) exchange might even be a safer custodian of those coins than someone keeping the seeds in the password manager.
Just an idea.