Yes.

That's one of the consequences of the XY problem.

Users tend to name out tools which they think might solve the current problem using the current approach. I have often seen people tag a question grep, sed, awk, and anything else they imagine can be used.

In the very case you mention, OP ends up using ed! Not grep, ed!

If someone is interested in grep, they can (and should) stress that they are interested in only grep, maybe specifying the reasons for such a choice.

"The right tool for the right job." is the default position, unless other conditions apply.

Yes.

That's one of the consequences of the XY problem.

Users tend to name out tools which they think might solve the current problem using the current approach. I have often seen people tag a question grep, sed, awk, and anything else they imagine can be used.

In the very case you mention, OP ends up using ed! Not grep, ed!

If someone is interested in grep, they can (and should) stress that they are interested in only grep, maybe specifying the reasons for such a choice.

"The right tool for the right job." is the default position, unless other conditions apply.