The sheer idiocy of this take. Libre Office (or other open source alternatives) haven't been around forever, and paying for software you use isn't exactly an outlandish idea.
I work with Excel a lot for work. I've been tempted for a few years to buy a perpetual license for my personal machine because using the same software is just easier. I haven't, and obviously now I won't be.
But don't put down paying a reasonable price for a perpetual license for software you use often. It's thinking like that that's gotten us all-subscription options.