Compared to ZeroTier, the Tailscale client has a permissive license, the mesh is fully routed (vs. a L2 network with unencrypted broadcasts), is written in a memory-safe programming language, integrates with company SSO, and uses the Wireguard protocol (i.e. sane, audited crypto instead of a DIY protocol).
This article has nothing to do with Tailscale the product and everything to do with the team's unconventional approach to engineering. That's what HN is interested in and why the post is being upvoted.
You didn't read the article, clearly.
> The posts of this company almost always come with their upvotes right after submission
This has already been explained to you in other comments, so I just assume you're being disingenuous now.
Find a new hobby.