Sure, I agree with that - although you might be surprised how many of them don’t. But that’s kind of the point, web servers are massive targets for virus development, and yet even grandma’s Linux Mint still doesn’t get viruses that often.

That the lack of Linux viruses is mostly/specifically due to lower user base. It’s probably a factor but I don’t think it’s the primary reason.

People say this but I don’t think it’s true. The vast majority of internet servers run on Linux and they are much higher-value targets than your laptop. It is more secure than windows, not just because of the smaller user base. However you’re right of course that you can still get viruses.