Indian here (~15+ years in tech). I've seen this behavior a lot, and unfortunately, I did some of this myself earlier in my career.
Based on my own experience, here are a few reasons (could be a lot more):
1. Unlike most developed countries, in India (and many other develping countries), people in authority are expected to be respected unconditinally(almost). Questioning a manager, teacher, or senior is often seen as disrespect or incompetence. So, instead of asking for clarification, many people just "do something" and hope it is acceptable. You can think of this as a lighter version of Japanese office culture, but not limited to office... it's kind of everywhere in society.
2. Our education system mainly rewards results, not how good or well-thought-out the results are. Sure, better answers get more marks, but the gap between "okay" and "excellent" is usually not emphasized much. This comes from scale problems (huge number of students), very low median income (~$2400/year), and poorly trained teachers, especially outside big cities. Many teachers themselves memorize answers and expect matching output from students. This is slowly improving, but the damage is already there.
3. Pay in India is still severely (serioualy low, with 12-14+ hour work days, even more than 996 culture of China) low for most people, and the job market is extremely competitive. For many students and juniors, having a long list of "projects", PRs, or known names on their resume most often the only way to stand out. Quantity often wins over quality. With LLMs, this problem just got amplified.
Advice: If you want better results from Indian engineers(or designers or anyone else really), especially juniors (speaking as of now, things might change in near future), try to reduce the "authority" gap early on. Make it clear you are approachable and that asking questions is expected. For the first few weeks, work closely with them in the style you want them to follow.. they usually adapt very fast once they feel safe to do so.