Look, at best it's a deterrent, not an absolute guarantee that it will stop the theft of your cat.
I'm all for deterrents, which is why I use a big, bright-yellow 'Stoplock Elite Pro' steering wheel lock as well as putting my keys in a Faraday pouch, but the RX has greater ground clearance that a saloon car so it's an easier target.
If you look at the information in the FAQ section "How long does it take to fit" here you'll find they say about 20 minutes to fit a Catloc. This means that they are not taking out the seats (if necessary) and carpets to drill holes through the floorpan to enable a titanium box cover to be bolted over the cat and fixed to the underside, because if they were, it would take longer than 20 minutes.
It's a cage-type device that fits over the cat and is secured in the main by using steel wire ropes or the chains associated with motorbike locks. The advent of cordless angle grinders/disk cutters make it an easy job to cut the exhaust pipe at either side and also the chain/wire rope of the Catloc, which will only add a small amount of extra hassle - but they will get through it.
@jonnybgood that video shows a reciprocating saw trying to cut the cables, something that no one would use. The preferred method is angle grinder/disk cutter.