This is a blog.... you don't need some monster machine. You can server TONS of people off the smallest Digital Ocean instance.
Many of these small VPSs can be had for less than a couple bucks a month. Tons of popular influencers run their own machines for their blog.
insinuating that it's unsafe to run your own machine is insanity. I don't understand this mindset of being scared to run your own stuff. Especially if you're doing doing it at such a large scale there's nothing wrong with doing it with nginx and a linux box on a vps. You'll learn a hell of a lot more and be fine. At the end of the day it's a computer. We've been hosting websites since the 70's. With the advant of cloud compute is easier than every to run your own.
(edited to be less mean)
We have had something vastly better than an individual computer since idk, the mid 90s, called a CDN.
I guess if you want to call being informed about the online threat landscape "scared", that's your perogative. For me, it's common sense to avoid completely unnecessary threat vectors to my digital infrastructure, but power to you if you like dealing with extra maintenance overhead and constantly wondering whether you're providing free cryptomining to some random international criminal.