This seems to be a divisive topic, I personally opted for a deeper tub to give my BP some more climbing and headspace but when I first joined this forum and shared details about my setup people told me to go with a shallower tub like yours. So tons of people do keep their snakes in tubs like this especially in racks.
One benefit of having a shallower tub is that it's easier to control the ambient temperature, especially if you don't have a designated "snake room" that is a higher temperature than other rooms. The best way to heat tubs is by raising the ambient temperature of the room but this can be inconvenient if you only have one snake and prefer a lower room temperature. I had a lot of trouble with the ambient temp of my deeper tub, ended up having to keep my bedroom at an uncomfortable 77F for a month, and eventually got a CHE and second thermostat for it (a lot of DIY installation required).
So, basically a pro of a shallower tub is that it's easier to get the heat right and saves more space if you have a lot of reptiles, but a con is that the snake won't have any room to climb or stretch out vertically (which they will, if given the chance).