Yes and noWell, I think, cardio kickbox isn't even close to Kick Light kicboxing for beginners under WAKO rules in EU.... so easy cardio kick is more as entertainment........
About suitability for MMA, I think, kicboxing kicks aren't less effective than Muay Thai kicks and in early times when kicboxing become popular, famous kickboxers were former karatekas etc. So we cannot blame even karate for kicks weakness etc.
However, kicboxing rules are quite different than Muay Thai rules!!! and especially this is reason, why MT is looked as more suitable for MMA.
Kicboxing is with strict clinch time limits and really stirctly limits what you ar allowed to deliver in the clinch or even do in the clinch.
Differences appears in allowed takedowns methods and so on etc.
So MT rules is far closer to MMA than kicboxing rules and this helps a lot to addapt for MMA.
bjj is softer. Easier to market to kids and families. Muay Thai is difficult to do, hard on the body and sparring can leave you beat up. It’s intimidating to start and requires a higher level of physicality to begin.
Yes and no
MT for the most part (actual MT and not a KB gym labelled as MT) isn't a better carry over to MMA. Kickboxing (K1/Dutch/sanda) is actually has a better carryover due to stance and more usage of hands.
Trad. MT stance of being upright is landing you in takedown city, also the clinch is an invitation to a double leg.
80:20 rear leg to lead leg isn't good for TDD and sprawling. Clinching posture is tending shoulder width and going kick to jock, you're basically inviting a bodylock
Even the physique is different as well, MT hates manlets with a passion so everyone is hella lanky. You got guys at 6'1-6'3 at the top end spectrum making 155. 6'0 at feather is normal in, MT not so much in MMA.
KBrs on the other hand is more natural in terms of height to weight class.
Part of it has to do with progressive rank. Especially in western countries where having a promotion that shows quantitative results is easier to relate to then "we all just train together, if someone who's been training less than I have ends up better, then that's that"Also, the uniforms. There's something about having a Gi and belt system that people, especially parents, are attracted to. I've literally had parents tell me that if their kids could wear their TKD or Karate uniform to a Muay Thai class they'd sign them up right away. I'm like "but Muay Thai shorts are some much cooler than pajamas.."