I guess it depends on which flights you're missing - if it's a 1 hour flight that can be replaced with a 5 hour train ride (e.g., Munich to Berlin), then, after you take into consideration check in times, boarding times, waiting for your goddamn luggage at Tegel (glad to see they finally opened their new airport, they can remove that new future tense[0] they added to German just for explaining when the new one would open) then missing the flight isn't so bad.
But as I'm out of APAC and was working for people in EU, all my flights were very bad ones to miss, as in, the next available flight will be tomorrow, if you're lucky.
For my $4K example, I missed an Emirates flight (due to a calendar fuck up, entirely my fault, got timezone differences wrong) that ended up in my home city via Sydney, usually took about 19 - 21 hours, depending on delays in Dubai and Sydney.
The cheapest next available was an Etihad flight that involved a very long layover in their very badly designed airport in Abu Dhabi - there's bugger all space to sit and wait, so people just sit along the halls leading to terminals, but worst of all, it's shaped like a giant hamburger, and so are the terminals, and the dome ceilings amplify noise amazingly, at one point I thought people were going to lynch the parents of a 4 year old who wouldn't stop screaming, just because the terminal's design amplified the screams so damn much.
And then it was followed by a long layover in Brisbane (I think? I was somewhat in a fugue state by then, all I wanted was a shower, and I had no towel, Australian airports provide showers, but not towels, unlike Changi or München Airport do), so by the time I got home, it had been 36 hours since leaving Munich.
So, anyway, long rant done, I can conclude two things: 1) Umesh is privileged to have enough wealth or earnings that rebooking a flight isn't a significant cost for him, unlike the majority of air travellers, and 2) Umesh isn't flying half way around the world.
I'm not big on taking life advice from people who are more privileged than the general population, because well, life advice implicitly predicated on privilege isn't really applicable to the general population.
[0]: https://www.der-postillon.com/2012/08/neue-zeitform-futur-ii...