Why are all 3rd gen idols boycotting the MAMAs?

Article: "Why are 3rd generation idols not coming to MAMA?

Source: Pann

It's really empty. There's nothing to see.

Male (9): Stray Kids, ATEEZ, NCT Dream, NCT 127, Wanna One, TXT, Enhypen, J01 (Japan), INI (Japan)

Female (5): Brave Girls, ITZY, aespa, Kep1er, SWF

Foreign (1): Ed Sheeran

1. [+519, -12] The worst of all lineups ever!
2. [+448, -22] There's really nothing to see..? The top 3 powerhouse idols are not even there..
3. [+276, -11] Is there a reason Blackpink and Twice aren't coming..?
4. [+204, -1] Probably why they added Wanna One even after they got cursed for rigging..
5. [+178, -1] Last year, only actors got waiting rooms and idols had to wait in the parking lot in their cars. Small and medium-size agency idols couldn't even do their stages properly. It's better to boycott MAMA 1000x than to waste your time and money attending. 
6. [+162, -0] That's why they had to bring out a disbanded group..
7. [+135, -4] 3rd gen idols are the reason Kpop is where it is now. Sorry to say this about 4th gen idols but the truth is, other than aespa, the public doesn't know any 4th gen idol music. It doesn't even feel like 4th gen shift has happened yet because idols debut at different times. The year-end awards nowadays are just rookies and their fandoms, not one idol the public can easily recognize. I honestly understand why they're boycotting and why MAMA had to add Wanna One..
8. [+113, -0] ㅋㅋㅋㅋ MAMA was so arrogant back then too...they need to do it moderationㅋㅋㅋㅋㅋㅋㅋ
9. [+102, -0] None of the top idol groups are coming so who will be watching exactly? At least BTS or IU should've come out..
10. [+90, -0] Can we just consolidate all the award shows now? There are so many ceremonies and not one with any authority. 
11. [+63, -1] Not one top idolㅋㅋㅋㅋ
12. [+38, -0] So who's taking home the Daesang? Ed Sheeranㅋㅋ?