I disagree based on the trends, especially in the US where few, if any, new coal plants are being built and most existing ones are scheduled to be converted to natural gas or shut down. But let's assume that a significant amount of coal will continue to be burned over the next 20 years. Do you think we should stop innovation in other sectors until we are off coal?
Most innovation doesn’t need massive amounts of electricity. EV’s being the only notable exception, but they are also offsetting significant CO2 emissions.
Further, the amount of electricity generated by fossil fuels is going to be heavily dependent on overall electricity demand. Keeping older less efficient and more expensive power plants operating is very much a response to electricity demand not an inherent lifespan independent of the electrical market.
At 23% of usage for electricity generation, it's far from being "on its way out" anytime soon.