A proper prop firm is one in which the interests of the firm and the interests of the trader are aligned.
An intraday trailing drawdown is in the interests only of the firm.
No one trades his own account on the basis of an intraday trailing drawdown. It's a gimmick that in fact encourages poor trading habits and is designed to generate new subscription fees.
FWIW, I traded in a stock prop firm for years before turning to futures and self-funding. As I said above "the current crop of online prop firms are really just sim account subscription fee mills" or something like that.
But a proper prop firm, that is one in which the trader's parameters are set such that the interests of the firm and the trader are ... wait for it ... properly aligned (of which there is probably only one in the online space) would be a gift for any underfunded newb (or any elitetrader who's been struggling for a decade or more) and has with dollar signs in his eyes and Lucy in the sky with diamonds.
The real question is WTF triggered you?
The intraday trailing drawdown isn't even that huge of an issue if you size properly. I already went over that. If you're up 100 points and let it come all the way back against you and that's going to happen 12 days in a row, than ok you're right. But how does that make sense if we already know the online prop firms are for intra-day basis?
Even if you're on a live account, trading intra-day why would you let 100 points come back against you? It doesn't add up, again unless you're swing trading, holding overnight or needing to use time and account size as your edge than maybe, but that has nothing to do than with an intra-day trading EDGE which is what you need if you're going to be trading with the online prop firms.