Why do rule lawyers have a bad reputation?

[Evil DM Mark3]

I looted those that missed the saving throw.

He always say his players only want sheep in a pen with magic items around their neck to plunder. He did not like it when I took the right spell to plunder the sheep(stone statues).

Must, resist, urge, to...

Flesh to stone also turns all carried gear to stone, making me wonder how on earth you were able to plunder them?

Sorry but it can be painful to hold those in

In all seriousness that comment might have started an actual rules lawyer debate (re item saves and the fact that the spell targets the creature BUT states is effects their gear) but what you said isn't rules lawyering by any sane definition. It does rather devalue Stone to Flesh apart from dealing the Flesh to Stone (which Break Enchantment DOESN'T work on being 6th level) and fringe golem hunting roles however. Fringe golem hunting roles that are a themselves an endless pit of rules lawyerness due to one really dumb line in Stone to Flesh mind you...