I absolutely agree, and while thinking long term, I look to DCA to the bottom of most alts and take profits when they hit my targets.
When thinking long term, My logic is how do i accumulate more in the best and most efficient way for long term growth. My USD value is irrelevant.
I see USDT or USD as a 1x short rather than preserving USD, and the goal is to ensure I have the most BTC possible by the end of each year.