Hey there, I am using a $6 Chinese copy wired remote for my SLRs & my 10 stop ND shots / tripod shots etc.
Don't make us sound like super snobs
But shooting architecture with a TS-E on LiveView using a 7~10" screen instead of the camera's ~3", or the optical viewfinder, is actually a different experience. Even phones offer 2x the size of screen these days.
And you can expand the utility to self portraits, weird angles (far better than a tilt screen, you can be anywhere, I've used it with 15' USB cables and/or WiFi @ 30+ yards/m away, but that's another story), astro, etc.
Same as reviewing images on a big screen while still practically "in camera". And being able to do this "tethered" shooting on the go, with a device you probably already have and minor additional expenses, aided by a $7 app and a $1 OTG adapter (how much was your IR remote?)...well, it is hard to resist trying.