It can be argued that the libreoffice dude is providing a service. If you were deeply invested in the windows ecosystem, with most of your apps coming from the store and you also have like 20 windows computers, buying it for $10 is totally worth it.
1 click install and auto updates being the advantage. Not to mention a centralized way to make sure all your machines are running the same version.
It’s not like it’s a subscription or per machine license.