Of course. Picking a tool is always a matter of what one already knows. If you've already learned Tailscale and it fits all your requirements - that means you go with it, unless you have some reasons not to do it (which is rare).

And Tailscale surely has one benefit here - it's one single product, with essentially no variations, so it's (I presume, I haven't ever used Tailscale myself - never needed it) easy to write a step-by-step instructions for. Generic "GNU/Linux software router with Wireguard" is an extremely vague target that impossible to give instructions for, unless you spend a lot of time describing the problem in finer detail.