Been shooting a 1911 for years, thumb disengaging and riding the safety has become a natural act. In fact, that computer between your ears is being programmed the more you train with a specific firearm to respond naturally with that firearm. A thumb safety for me is not at all taxing on my brain…if it is too of a much strain on yours, then by all means, bypass it.
What works for one, doesn’t necessarily work for all.