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Yes. But it would be helpful.

Select multiple tracks:
<strg><shift>1 … reset their height
<strg><shift>+ … make each selected track bigger
<strg><shift>- … make each selected track smaller. If it has minimum size then no change

So it's basically the same if I'd iterate through the tracks. Of course all selected tracks would have the same height after <strg><shift>- often enough and then using <strg><shift>+