Putting concentration on your gas fee before confirming your transaction is as required as giving concentration on the certainty of the address you're sending fund to on ethereum blockchain of nowadays.
Ethereum is said to be getting moved into Ethereum 2 and care should be taken to avoid losing one's fund to just transfer of Little sum of funds just like we had it few months ago.
Yeah, this is definitely a good advice, for me, the two most important thing I make sure of when sending or making a transaction is :
1: The address am sending to, it is very very important to always make sure you are sending to the right address, if not, you will just end up giving your crypto to someone else with out even getting a "thank you" in return
2. Gas fee, just like the op have said it, I always pay attention to this to make sure am not spending more than required to send that particular transaction, if the price am to pay for gas is too high, I either try to adjust it or cancel the transaction and do it later.
I think this things are things every one in crypto should always be conscious of.