If each “power board” (the technical terms in the US are “multitap” and “relocatable power tap”) has a circuit breaker that has been correctly designed, it shouldn’t be dangerous to daisy chain.
But workplace-safety regulations still say, “no,” because unfortunately there are a lot of crap products out there. And because regulations don’t always make sense.
Personally, I don’t care if all the devices are low-power and the multitaps are high quality.
Be careful about loose sockets. They can cause a fire even if the circuit breakers are correct.
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