I don't understand why but people do it, people do crazy things use a lot of IP, scripts, change addresses to prevent blocking to get more and more testnet coins
This is one of many examples:
https://tbtc.bitaps.com/2NBMEXavJZV2VoBCiRFHEJ8DehgYnfM9wav8.34076971 tBTC 1 736 transactions.
We created a testnet faucet to help developers and did not expect to encounter inexplicable greed of people.
I'm thinking either
1)For some odd reason they think they will be worth money.
or
2)To scam newbies not sure how as the wallet does say testnet, but who knows.
or
3) OK, I got nothing for #3
-Dave