2.5B is a whole lot of money lost, but we have to consider that bybit exchange lost $1.5B of that and Cetus exchange lost $220m, so if these services had invested in their security, then the losses would surely not have been this high. So as people learn to secure their funds from scammers, they should obviously not store it in any third party service, because they could easily lose it there, not your keys, not your coins.
And just to think about it, we are just in the middle of the year and there could be a lot of things that can happened to the crypto market. And if I'm not mistaken, the numbers are really going to grow. Despite what the exchanges are doing, there will be a online attack that they are not ready and so there will be billions lost along the way. This is just the sad part of it, as if hackers are one step of the game. So it's a cat and mouse game right now, services trying to come up with ways to protect, while cyber criminals are improving their skills like in the real life. So the burden is really on 3rd party services, although I do agree that not our keys not our coins. But if we are a trader, we really need to used the DEX around so the threat will always be there for us.