Use the delete key. (My apologies for the snark, but I'm kinda serious, don't send those type of review comments at all).
If it's fine for now, it's fine. If it's not fine - then speak up.
If you do have such concerns, "fine for now" - that is something for an offline conversation - outside of the context of a CR. Which is also a good litmus test for how important a comment is. Would you schedule a 15 minute meeting to discuss the issue with your colleague? If not, then why is it okay to do that to someone during a CR?
If it's fine for now, it's fine. If it's not fine - then speak up.
If you do have such concerns, "fine for now" - that is something for an offline conversation - outside of the context of a CR. Which is also a good litmus test for how important a comment is. Would you schedule a 15 minute meeting to discuss the issue with your colleague? If not, then why is it okay to do that to someone during a CR?