I see where you're coming from. I find that it's human nature to want to grab onto something as a way have an anchor in the storm. The stormier you are inside, the more intense you are about the anchor. It might be religion, money, fitness (Crossfit anyone?), food -- people latch on to a way to feel worthy and do so by trying to perfectly execute a lifestyle and often become obsessive and evangelical. So I would guess you're feeling put off by that energy -- and I am too! I feel the same way about Dave Ramsey, except with him I am even less impressed because he piles so much shame onto debt.
That being said, I think Mr. Money Mustache himself finds a way to be joyful and not take his way too seriously. He acknowledges he is frugal sometimes to a fault. I think it's wise to take the "debt emergency" with a grain of salt -- many experts in the field of money rehabilitation see anxiety over debt as counterproductive.
As for me, I was raised in an incredibly controlling household where money was used as a manipulation and control device. I am from a legacy where women are groomed to be dependent and dysfunctional with money. Pile on some abuse trauma and I was ripe for a shopping addiction. I never had an issue with money until I hit my late 20's and started processing trauma differently. I have read quite a few blogs on the topic and I'm certainly not the first person to process childhood abuse with financial chaos.
So here I am just trying to get inspired and change the way my wheels turn. But assuming this is the BEST, RIGHT way, that if you work your whole life you've somehow failed, that if you aren't a master saver you are somehow deficient, is not only wrong but it's violent towards people who may be addictive debtors or are otherwise maladaptive in how they handle money. Or, frankly, missing something -- we don't know how abundance and money works in every way. Look at Migos. They have 18 ropes of diamonds around their necks. Are they crazy and wasteful? That's a simplistic argument. Whatever they are doing is working. It's not for some frugal beagle to say whether that is a successful approach or not.
I would especially encourage men to think twice about their judgments about others with money and spending, particularly women. Our culture has given you a very different headspace about your finances than women. Also look into the Purple Purse Project if you want to help heal the legacy of financial abuse.