tychosmoose

It looked anti-vandal to me with it’s low profile, chamfered edges, and all-metal face. It would be difficult to get leverage against these to damage them or rip them out of the hole.

A €1 button is made of plastic and is easily smashed to bits.

It’s not exactly featureless.

In electronics terms this is a switch.
Pushbutton
Momentary (meaning it doesn’t remain in the pressed state when you stop touching it)
Panel mount
Anti Vandal
Non-illuminated (I’m guessing based on the photo)
Green

There aren’t so many green switches as red or black, so that can help the search.
It’s also probably something readily available since this doesn’t look like a device built in the thousands.

I’ll bet it’s this one or a different size from the same manufacturer:
https://www.buerklin.com/en/p/eao/pushbutton-switches/82-6851-1000/12G0085/

Of course it could just as easily be something sourced in China if I’m wrong and this control panel is mass produced.

Ha! Mine’s the same! My job was dumping them and said take it if you want it. A v1 TP-Link TL-SG105. I don’t think I’ve used mine in at least 10 years but I can’t bear to throw it away.

Classic blue 5-port gigabit switch. Chef’s kiss!

These things will be with us until the heat death of the universe. Still chugging along.

Jepson’s Malört. Famously bitter. I think it’s nice, but it’s often served on a dare in bars in the Chicago area.

Backup option would be straight Campari. He will need to be ok with probably dying his mouth red when he takes a sip. Mix 1:1 with some Fernet Branca to add some menthol and bitter herb flavors.

If he finds bitter flavors tasty then idk.

Did you maybe mean supercilious?

Edit: It seems like OP wants something like “supercilious incompetent”