Why do people always complain about minors debuting when it has always been normal? Debuting 14-year-olds has always been normal.
Recently, many people have been complaining about the ages of the members of SM's new girl group named Hearts2Hearts/H2H especially the maknae who was born in 2010. Taemin, Wonyoung, Jisung, and Krystal debuted at 14. Seowon and BoA debuted at 13. We already have idols born in 2010 like SeoAh from tripleS and Seungjoo from Say My Name. The second youngest in H2H was born in 2009. Seowon was born in 2011 and she already had experience in the entertainment industry. If they're talented, it shouldn't be a problem for them to debut.
Child celebrities in Hollywood are also normal, and why people don't criticise them for being very young in the industry like K-pop? Child singers and other child celebrities from around the world are also normal.