You can caution anything you like under "lack of respect", it's there in order to be a general term. Dirty boots can be considered a lack of respect for the game. Calling it "soccer" instead of "football" can be considered a lack of respect for the game. Etc etc.
The point isn't can you (because the answer will always be yes), the question is should you. LRG isn't meant for normal playing actions, it's meant for such wild and weird examples that they couldn't reasonably be expected to include them in the law book.
So where the question is "should I use LRG to caution someone where it's a perfectly normal foul and doesn't meet any of the normal reckless or SPA criteria?", the answer is probably no.
The point isn't can you (because the answer will always be yes), the question is should you. LRG isn't meant for normal playing actions, it's meant for such wild and weird examples that they couldn't reasonably be expected to include them in the law book.
So where the question is "should I use LRG to caution someone where it's a perfectly normal foul and doesn't meet any of the normal reckless or SPA criteria?", the answer is probably no.