You assume they put it on sensibly
in my place, for example, the bath side is a sheet of ply with tiles stuck to it, which is nicely tile adhesived under and into the lip of the bath - be fun getting that out if I ever need to! (Thankfully they at least put an inspection hatch up the top end; when I moved in the only thing holding it 'closed' was a bit of wadded up toilet paper wedged in the gap though
)
I made a similar surround for the bath at my place when we first moved in, since the previous owners had wood with carpet stuck to it, was the most disgusting thing ever.
Obviously a few years later, the sealant needed redoing. So I did that, and there was still a leak coming through into the alley way. I assumed a tap was leaking so wrecked the tiling to access it, only to discover I hadn't sealed the bath properly.
There is just painted MDF on there now, easy to unscrew as needed.
If I mentioned this to SWMBO, I might be reminded the bathroom suite has been in there longer than we have lived here, 20 years this autumn. I might also be coerced into replacing it. Shh.