I’d guess it’s corporate circlejerk - they probably made deals with hardware manufacturers who are annoyed people are not replacing their perfectly functional systems with new ones. Windows gets pre-installed on new systems, and in exchange windows requires new things forcing people to upgrade their old systems - or be locked out of the most popular OS in the world.
I haven’t used tailscale to know how well it works but as a current zerotier user I’ve been considering moving away from it.
I actually love the idea and it’s super simple to set up but has some very annoying pitfalls for me:
Pretty much all of the issues I’ve had were with devices that have to disconnect and re-connect from the network and/or devices that move between different networks (like laptop, phone). On my router, it’s been super stable. Point is, your mileage may vary - it’s worth trying but there are definitely issues.