Both Chrome and Safari are the new IE, but for different reasons; the former, pushing their own browser standards, and the latter, falling behind in standards and being a pain to develop for and use.
mozilla is an org that lost its focus and goes after butterfly projects while their browser is the slowest and heaviest on battery with a tiny user base.
i am a firefox user everywhere except ios, where it's safari. i dont mind the diversity actually, use a safari integrated blocker, not much worse than ublock and i'm sure my battery thanks me for it.