You press the button forward, cut, release, what's the issue?
If you go through four blades per day then this isn't the most efficient tool for your needs, because it requires opening it up to swap blades. That's fine for the role this is made for. It's not supposed to be a dedicated warehouse knife, it's made to be a nice, small, comfortable disposable blade knife to let the owner spare their knife blade if they need to cut something a bit questionable.
Why put your nice knife through a single groundcloth or tarp you have to trim up when you can use a tool like this one? Why not use a little donger like this for a quick cutting task in an environment where using a regular knife might upset people around you?