If you're confident that you know how to securely configure and use Wireguard across multiple devices then great, you probably don't need Tailscale for a home lab.

Tailscale gives me an app I can install on my iPhone and my Mac and a service I can install on pretty much any Linux device imaginable. I sign into each of those apps once and I'm done.

The first time I set it up that took less than five minutes from idea to now-my-devices-are-securely-networked.