I don't think anyone's saying it's easy to review a scope. However as eevblog is a vlog for electonics engineers both professional and hobbyist, I'd say a candid review of a scope's operation is worth quite a lot more than a teardown, interesting though that may be.
To put it into perspective the Ds1054Z series of videos Dave did a year or two ago were thorough enough to base a purchasing decision on.
At the other end of the spectrum having seen Ben Heck's attempt on the KS1000, I was left wondering if he'll ever receive a scope again. To compare, Applied Science, not an electronics-specific vlog, has done tons more with his Tek scope than Ben Heck has ever done wirh his freebie Tek, and his KS1000 explains why.
My point is that if you are going to drop potentially several grand on a scope, you need a reasonably well qualified person with scruples to review it. The same doesn't necessarily apply to a $5 lipstick (if that's what lipstick costs, ahem).
So yes I am being cynical, and I don't mind confirming it!