I feel like which network depends on what you’re advocating for and to which type of person. For example, Mastadon, Lemmy, and Bluesky are fairly left-leaning, so advocating for a well-known liberal idea there could be “preaching to the choir”.

+1. Buy an ice cream maker and use these to make sorbet; you’ll never have too many strawberries and raspberries again.

Your approach won’t work if you’re behind carrier grade NAT or you can’t open ports. My landlord provides my internet so I use tailscale (with headscale on my long distance vps) to connect everything and it works great. It uses LAN when I’m home, and NAT punches when I’m elsewhere.