Your idea is 100% true and everyone will agree with your idea. If the Indian team management had given importance to the team selection and chosen to bowl on the Ahmedabad pitch, they might not have performed so badly that day. Rahul Dravid's team selection was not wrong, but they should have considered the spin on the pitch that day. Only Virat Kohli, Rohit Sharma, and KL Rahul's contribution was noticeable that day but others contribution fully zero.
I am not sure whether Rahul Dravid was given 100% freedom in team selection. I was not very happy with the way Mohammed Shami was left out of the first couple of matches, and also the way they treated Ravichandran Ashwin. The current selection criteria hasn't worked well, as we have seen from the failure of the Indian team during world cup finals. I would suggest providing complete freedom to Dravid, at least for the next 12 months, and also some of the senior players (especially guys such as KL Rahul) needs to be rested and replaced with younger players.
We cannot put the entire blame on the team selection as India's performance in the first 10 matches was outstanding. Everyone started to think that India might win the 2023 World Cup but their reverse in the finals is really unacceptable. Moreover, if India won the toss in the final, the picture of the final might have changed. Rohit Sharma's performance in this World Cup was amazing, Virat Kohli performed amazingly and became the highest run scorer. However, despite India's all-round performance, such a defeat cannot be accepted at the end.