I do the same, I use kodi on a CoreElec box on my 10 year old dumb TV. It works great, but my issue is it’s going to be extremely difficult to replace my TV when it gets time to upgrade. (Eg, if I want to move to an OLED, or QD panel). Every new TV on the market is a smart TV. It’s getting to the point that you need to buy a very large monitor, rather than a TV, to achieve the same setup.