Nitpicking 3 or 4 innings to prove a point, now are we?
I can easily name 10+ innings where he played match lose innings from either winning or winnable positions.

1. 5(12) coming in at 56-3 chasing 131 against SA. Only Raina had a worse SR that match. https://twitter.com/internetumpire/status/1288352925152980992

2. 6(10) coming in at 103-3 against Pak in the WT20 final. Worst SR that innings.

3. 9(12) coming in at 32-1 chasing 216 against SL.

4. 13(17) coming in at 81-3 chasing 173 against SL.

5. 10(11) coming in at 136-5 setting up the target vs SA. Worst SR that innings.

6. 22(23) coming in at 120-3 chasing 168. India lost by 1 run.

7. 13(12) coming in at 112-4 against Bang.

8. 12(11) coming in at 126-4 against SA.

9. 19(17) coming in at 90-4 chasing 167 against Zim, India lost by 2 runs.

10. 16(14) coming in at 129-3 against SL.

Point being, 85 innings is a big enough sample size to cover the nuances of match situation. If his only role is collapse specialist as a batsman, then his role is long past its expiry date. He can't and shouldn't make the T20i XI.

Stop defending the indefensible.