No, you are.
'Cause you'd say they should replace them with A321's.
We kid because we love.
A fun fact is that both the 737-9 and 737-10 have more orders than the A321LR. I expect the A321LR order count and conversions to eventually exceed the 737-9, but I personally predict more 737-10 deliveries than A321LRs.
The 737-10 hasn’t delivered its first plane yet, but has More than double the orders that the A321LR has. For many airlines Efficiency over the short range is more important than max range given that the average 737/A320 flight is under 1000 miles.
You're comparing the A321LR (a variant of the A321neo, itself a variant of the A320neo Family, making the A321LR a sub-variant of the A320neo Family) with 2 variants of the 737 MAX. Kinda comparing apples to oranges.
As of December 31, 2018, 2,280 A321neo's were on the order book (out of 6,526 A320neo Family, 35%).
As of December 31, 2018, 741 737-9's and -10's were on the order book (out of the 3,417 confirmed variants of the 737 MAX, 1,588 are unconfirmed/unpublished variants, 22%).
Right now, the A321neo is a greater success (overall and within its own family) than the 737-9 & -10 combined.