They have an even better understanding of what's best for the BOM cost for a cheap drone; no way around they going to put the best available props for the drone out of the box. It gets the minimum cheapo that works.
Agree, not the "best" props. But functional. And overpriced.
DJI Ecosystem = pricey, proprietary, pita diy repair. Price we pay for fun.
Bit like the Neo MasterAirScrew. They know DJI users will purchase at their $13.99 price. Time will tell, but doubt if most will notice a difference. -2dB, most will not perceive. 6% improvement in flight times = less than a minute even in S mode. 200% faster acceleration? After being unimpressed with their $12.99 Avata2 MAS. Pass on the Neo MAS.
Bin full of Gemfan props of identical pitch, size, shape to the OEM Avata2 propellers. Paid less than $2/4 propellers. Thought I could use them when needing to replace the $9 OEMs. Almost a std T-mount. Bolts holes on the motor were just a fraction of a mm different spread

. First thought. DJI.....
Needed a controller that allowed for manual mode. Limited to the DJI FPV RC3. Took an effort to hit purchase tab. $199 for input device. Not even a "real" Tx. Second thought. DJI....
Just life in the DJI Ecosystem. Accept or move on.