I think calling an airplane that was officially launched 7 months ago and has around 400 orders a sales flop is an example of commom bias found on this website.
It appears that people are very quick to jump to conclusions. The 737-7 and A319neo appear to be niche planes that the market is moving away from, but I think that the 737-10 has already shown enough market acceptance in a short period that we are beyond sales flop comments.
As someone with an intrinsic dislike of calling any aircraft a "flop", I'd agree that the 737 MAX 10 should not be called a flop.
In terms of numbers, according to the site Keejse linkedhttps://en.wikipedia.org/wiki/List_of_B ... deliveries
Total number of known
737 MAX 10 firm orders so far is 274 according to that list.
Unfortunately the site list the earliest order date for any MAX for that airline, so all seem to predate the launch of the MAX 10.
I know that is not true, but clearly many of these orders were conversions from previously placed orders (like the 100 for UA), and as such were a) not new, and b) clearly reflect that the airline would have ordered the MAX 10 originally if it had been offered.
For context, the A321 NEO has secured 440 firm, NEW, orders in the last 7 months
As an aircraft, the 737 MAX 10 shouldn't be considered a flop.
But one thing it has clearly been unable to do, up to now at least, is stop the dominant run away of the A321NEO at the top of the narrowbody market.
Recognising this should not be labelled as fanboyism - it's a fact backed by the data, irrespective of what Leeham offer as their opinion.