Not rely on r you have enough intuition it typically doesn't matter if your worried about not enough time 5+3 is perfect
Many beginners have an issue of not using rapid time correctly either playing like it's blitz chess (if so just play blitz you'd actually improve ) or if your thinking too long
You need time management practice anyway which bullet is insanely useful for it
Your right it csn have the opposite effect if your not careful but we long as you balance it out y doesn't matter at all besides why do you need to think 2 minutes a move anyway most beginners don't typically do that and from what I watched when they do they tend to blunder
if I were to start playing blitz in addition to rapid would that help spot tactical ideas quicker.
I fail to see the logic of this. If you have less time, it won't help you see anything quicker. Why would it? And how? The only effect will be is that you'll blunder more.
Of course, if you want to play blitz, sure, why not. But it won't really help to improve in anything.
Not exactly blitz can improve faster thinking and time management which is important just depends on the person
Blitz forces you to think fast and make a decision fast. If a player doesn't have the tools to do that, they will play random moves. Blitz improves nothing, it's the other way around: puzzles improve fast thinking and that can be used in blitz.
I wouldn't recommend blitz to anyone under 1000.