To be realistic though, wouldn’t you bolt something like that down, generally into a corner. It would then be much harder to cut it open, as a thief wouldnt be able to flip it around to cut their way along each side like that. Even if the exterior walls were 6mm thick there’s not much point putting your valuables into something that a thief could tuck under their arm and carry off.
To be fair it doesn’t really look like a safe that is super secure. The door hinges are on the outside and it doesn’t refer to multiple locking points. Which while looking nice and make you feel good I dont think are really necessary. Having someway that the door doest lift out if the hinges are cut is all that really matters.
There are a few YouTube videos that show people testing the security of safes. One used an angle grinder and was inside in about 10 minutes and it was bolted in a corner.
I saw a video of a cheap eBay gun safe opened in a couple of minutes with a rubber mallet.
The safe wasn’t bolted down though, he just pounded on the bottom a few times and broke the spot welds, then folded it open.