I would say its more persona taste. Especially if your talking front end equipment. Most well known filters can adequately feed servers, DAC, preamps etc. Its amplifiers and subwoofers where the isolation transformers really steps ahead. Sized properly they can handle any ampacity. What do you think is on the pole outside your house feeling you and probably 5 neighbors. Its a basic step down transformer. Nothing special. What feeds that transformer. Another step down transformer of larger size at a distribution site. What feeds that. Maybe more distribution transformers. Eventually it derives from a turbin. Usually. Nuclear, coal, natural gas, wind, wave, tidal. Those are all turbins. Solar and hydrogen fuel cells are the oddball.
Battery and inverters are more limited in power output. If you overload an inverter, they put out massive distortion. If you underload them, they put out more distortion than what they are specified at, at a rated load. Inverters like to have the right amount of draw and have it taken at a steady state. They have a window of peak performance.
A transformer does not care as much. They are perfectly happy to pass peak power or a steady load. But they all have losses. Probably 1.5% to 3%. So if your concerned about wasting power or utility cost, then other options are more power friendly.
