They recommend Tailscale in particular. Tailscale control plane and DERPs (which are functionally required on mobile) will be among the first to go.

Outline (shadowsocks-based) and amnezia (obfuscated wg and xray) both offer few-click install on your own VPS, which is easier than setting up headscale or static wg infrastructure, and will last you longer.

Also, you did not answer my "why" question. I'm not sure what question you were answering.