Least wanted role in the game.

Support being unpopular is obvious, but it surprised me when teambuilder got going how ADC is the second least popular role. I wonder if it's the pressure to do well or the "reliance" on another teammate, which doesn't make that much sense since you can still do well with a bad support (not as easily, but you could), when a support won't get anywhere without a good ADC.

On a similar note, it seems the most popular roles are always top and mid, implying that solo lanes where you aren't forced to rely on anyone (jungler has the lanes, adc has support and vice versa) are more desirable.

It's the opposite. A good support can simply dominate the lane if against an incompetent support.

This is a little misleading.

Lots of people, myself included, search for support/marksman bot, whereas people search for all different roles in the jungle. Look at the 3rd and 4th choices - they're both jungle - but jungle doesn't appear as the top choice because it's split into more different groups.

I think they should change this feature to show in demand positions, then within each position, show in-demand roles.

As an aside, I've also seen [Marksman | Jungle] pop up under the in-demand roles, so I'm not sure that it's a staight-up, "What is the most demanded role?" calculation.

Due to limitations, only complete [lane/role] pairings are displayed.

Jungle/Any may be the most in demand, but since it's not a specific role, it doesn't show up on the main page. Bot lane shows up because every team is looking for them (putting Any causes problems) and they are generally not as popular as solo lanes.

In my experience, jungler is significantly less popular than both ADC and support.

I love support, and I would gladly support. The real issue is getting players who come even close too my skill level. Whats the point in supporting if your team cant do their roles right. Might as well go a carry position, do the job properly.

ADC must be really OP, right?

lol.

This is not a reliable statistic, while I'm not saying it's wrong you have to take into consideration that the disparity in team builder is magnified significantly by the fact that supports/adc mains can reliably get the role they want in both draft and blind, so they don't even bother dealing with the extra team builder queue time.

Well, support and marksman are 2 of the most flat role in the game. They need experience , mechanics, and are quite fun, sure, but they have huge drawback in flexibility-

Support is pigeon-holed into buying a support item and then has to make-do with a huge gold gap with his teammates and enemies, and while it's true that support utility compensates for they lack of gold, is also true that building is part of the fun of playing league, optimizing your items against the enemy strategy. The supports have a limited choice in this regard as they have less gold. (HINT: No one lets you harvest the spoils of war after level 9, and that's a scientific fact).

For marksman the itemization is now broader that before, but still, there aren't that many difference between how you play an AD caster (Lucian, Varus, Graves) or how you play a pure AD carry (Ashe, Kog'Maw, Vayne). And, as others have mentioned, the adc is the priority target in teamfight, and you never have the warrant of a team that will at least try to protect you.