It's a good article.. but it's seems the journalist doesn't want to admit whether she's fan or not.. because they're kind of old-fashioned and too old to play as boys-band (look at NKOTB they're ridiculous) ...
She asks why they keep performing together instead of having solo carreers just as Justin Timberlake.. but they're good at what they're doing!! It's just as simple as that.. They sold over 100 millions albums.. and yeah Jonas Brothers may not be still active in 15 years..