Don't just focus on how many times you've multiplied your position; the most insidious part of a contract is often the oracle price feed, which can be half a beat slow: when the market suddenly moves, the on-chain update hasn't caught up yet, and you think you're still safe, but the next update jumps to a worse level, and the liquidation line gets pulled closer... Especially during high volatility, it's really a case of "you lose it before you even realize it."

Personally, I now prefer to use lower leverage, keep more margin, and when there's an announcement, macro news, or chaotic messages, I reduce my position first—I'm not racing against liquidation anyway.
Recently, there's been a debate in the group about privacy coins/mixing compliance, and I just feel that once exchanges tighten risk controls, liquidity and price feed environments will also become more temperamental, so it's better to be more conservative.
As for your comment that "price feeds are pretty fast"... well, fast doesn't mean they're always quick at that exact moment.