Not necessarily. There can be so many different things happening here.
The commenter might overlook something. So the word will might not be a good choice. You can say could or can.
The second sentence is not free from this either. If the commenter did indeed overlook something and the code was specifically written as it was on purpose with full knowledge of what might happen, then this can come across as quite condescending. As in "you dumb-eff don't even know how to read a large table efficiently. Here I'll show you how exactly to do it sigh". And the author will think "what an a-hole, does he think I don't know how to do this? What a dumb-eff".
Without knowing the exact example you were thinking of one could at least rewrite it to "One possible optimization I can think of would be to do X".
Now your PR author might say "Aah you're right, I copied this code from place A quickly to prototype this and forgot to come back and do it properly for the large amount of data we expect in Prod. That X approach is pretty neat. I usually prefer Y. Look here I pushed a change. Let me know what you think".
The commenter might overlook something. So the word will might not be a good choice. You can say could or can.
The second sentence is not free from this either. If the commenter did indeed overlook something and the code was specifically written as it was on purpose with full knowledge of what might happen, then this can come across as quite condescending. As in "you dumb-eff don't even know how to read a large table efficiently. Here I'll show you how exactly to do it sigh". And the author will think "what an a-hole, does he think I don't know how to do this? What a dumb-eff".
Without knowing the exact example you were thinking of one could at least rewrite it to "One possible optimization I can think of would be to do X".
Now your PR author might say "Aah you're right, I copied this code from place A quickly to prototype this and forgot to come back and do it properly for the large amount of data we expect in Prod. That X approach is pretty neat. I usually prefer Y. Look here I pushed a change. Let me know what you think".