Nothing wrong with indicators at all Heavy if they're used properly as confirmation or confluence, as you mentioned.
Where folks get into trouble is when they let the indicator be the decisive sole factor instead of just using it as an item on a larger checklist.
The ZUP you mentioned has some great stuff in it. I don't use it anymore because it's a resource hog on MT4 but it's still really good if you know how to interpret it and not get hung up on every pattern it shows.
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