It's bad precisely because it ignores all the non-China tariffs that the Trump administration plans. Asking a question about only a part of the plan makes it a straw man question, trying to give an answer which diverts discussion from the big issue.
Edit: It's not just the other tariffs. It's the question in general. If you ask "Are tech tariffs a waste of time?", you better try to answer it. Obviously, they aren't. If you tax any CPU not made in the US, then you will definitely strengthen CPU production in the US. This might give Intel fabs the leg us it needs. On the other hand, if other countries introduces reciprocal tariffs, it might reduce Intel exports. Discussing only China takes away from the discussion of what tariffs can achieve.