90 000$ in futures is a lot, the risk is too high, though the profit that can be obtained is also high if you are sure about the position you are entering is fine.
But if in reality I would not do that in futures, maybe I can still do it in spot trading but not in Grid trading.
Dude, he was just asking and just using an example. Read his post again. and the by stating $90,000 he was talking about the price of Bitcoin and not the position size.
But since this is just like a hyperbolic question, maybe it is possible to set up such a trading activity. As long as there are set limits that only SL and TP are used,
I think that is okay.
It's OK to just let go if you have not understood what someone asked, rather than just reply anything just because you feel like replying. You simply end up embarrassing yourself and may look like a spammer to some members.