Yes, I certainly believe that the NO is a valid Mass and have no hangups assisting at it. That said, when I’m around a church that offers the TLM you won’t find me at the NO Mass unless I got up too late (mea culpa) or I have to be there for some reason. If I have the option of an Eastern Rite DL but not a TLM, then I will go to the DL. If these two options are not available, I will pick the most trad NO I can find. If all I have is an “average” NO, I’ll go without a complaint but if all that is available is a below average NO-I’ll offer it up and pray for the day when people won’t be subjected to ideologically impoverished liturgy.
While I have no hangups assisting at the NO, I also make no bones about prefering the TLM. When I assist at the TLM, I can trust that I will not be subjected to syrupy homilies and/or questionable theology preached from the pulpit, poor vestments/sacred vessels/architecture beyond what cannot be helped, and an inherent reverence that cannot be matched by any NO-even ones that make use of all the traditional options still available.