Speaking from the point of view of non-Indians, American-made fighters like the F-15EX are not a good choice for Indians. If such a choice is made, the Indian Air Force will have to operate foreign flagship fighters made by three different countries in the future. This is exciting for military fans, but it is catastrophic in terms of fighter maintenance and logistics supply system. The INF should not diversify the supply line for overseas fighters any more than the current level. For the same reason, the ROK Air Force does not operate any foreign fighters other than domestic and US-made fighters. It should also be carefully considered whether the US can provide India with the same long-range air-to-air armaments and electronic warfare products as its own air fighters (AIM120D at this time, JATM in the future). These armament options are also missing from the list of F-15INs recently proposed by the United States to Indonesia. If the US can't fully provide these options, it means nothing to India. The Air Force is wise to either keep the status quo or further reduce the number of foreign fighters.
Recently, there seems to be a conflict with Egypt over the same F-15 supply problem.
https://www.tacticalreport.com/news/article/59707-egypt-concerns-over-the-f-15-deal