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UUIDs aren't random by design, and the structure is not pointless. Calling something you don't understand "stupid" is probably not a good approach to life.

One example where UUIDs are useful is usage as primary keys in databases. The constraints provide benefits, such as global uniqueness across distributed systems.

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The global uniqueness of a uuid v4 is the global uniqueness of pulling 122 bits from a source of entropy. Structure has nothing to do with it, and pulling 128 bits from the same source is strictly (if not massively) superior at that.

I stand corrected. I was thinking of the sequential nature of uuid 7, or SQL servers sequential id.

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