i strongly disagree with that. what makes technology boring is the fact that it has less unknowns. ie no hidden costs. that doesn't mean there are no costs, but the costs of eg java are well documented. if those costs are a problem you can choose other tech with different costs. the danger with interesting tech is that the costs are unknown. you do not want unknowns in your tech stack. you have enough unknowns in the problem that you want to solve.

unless of course you are solving boring problems. most of the work out there is solving old and boring problems. there is no innovation to be had. in that case you may innovate in your tech stack instead.

in other words, choose one area to innovate. don't innovate in multiple areas at once.