Meh, this is overstated. I have HED Belgium+ Rims, which I had built up for reasons other being tubeless ready, and they are excellent rims that make an excellent wheel. I have run them with tubes, and for the past two years tubeless. Taping them isn’t any harder than taping any other standard rim, so in other words not hard, and they seal up fine.Their main debit is that it does take a good blast from my air canister to get them to seal up but otherwise not much by way of fuss.
It has been working well for you, but many people have had trouble properly taping tubeless ready rims and have become frustrated with road tubeless. My take is that the future of road tubeless wheels and tires lies with setups that do not require taping. The very first tubeless road rims produced by Shimano did not require tape. I think that they were onto something