Nobody is debating whether it offers more features the issue is some clients currently have devastating firmware/driver issues when using WPA3 that make it completely unusable so it's worth trying it out and seeing if that's the cause or not, no?

Unfortunately if it is this is not something the user can fix like simply managing the firewall properly so you may choose to disable it for now in that case. That's fine, particularly for home WPA2 PSK networks where the only risks mitigated are someone DDOSing you off the Wi-Fi (which they can do without management frames via interference anyways) and someone getting your passkey and then decrypting past recorded traffic (future traffic is still a risk even with SAE, they can spoof being your SAE SSID and if your client connects to it you're sending all your data to your attacker, just extra securely now). In the future there may be other problems discovered with WPA2 but it's by no means considered insecure yet.

Anothing thing to try for 5 GHz issues (again, not to be taken as "do this everywhere all the time and just leave it that way regardless if it helps") is try non-DFS channels. They may normally be more open but devices sometimes still have problems with them and the regulatory requirements around what happens when there is interference in certain areas.