I also do not see the danger of relocation, he has harvested the eggs from the same place he used to breed the frogs.
IMO this is just plain alarmist.
Just to pack "millions of them" in a place that can sustain food for, maybe, one hundred tadpoles?.
Does not seem like a wise move. Would compromise the success in the breeding areas for nothing. And would be clearly illegal in many countries.
Rescuing tadpoles to a pond (in the same area) could be "justified" in a few cases like a temporary mud puddle that is drying really fast, but messing with the ecosystems just for likes is an horrible idea.
This is the part I do not agree with. There is no way he was able to harvest that many eggs. We're talking about multiple wheelbarrows worth of eggs that would have had to be found (in murky terrain, hard to see), harvested, transported.. this is not a one-teenager project. Nowhere in the videos does he show any sort of tools more advanced than a bucket to help with this -- you would not be able to do it with a bucket.
Other commenters have pointed out his videos were stolen from Youtube, so the amount of eggs he actually probably harvested from nature is 0.
If we’re talking of such a species and all of them were to hatch, that would take less than 140 female frogs.
Having lived in areas where these frogs are common, I don't believe the numbers for a second.
Unless you've got 100M ladybugs, I guess.