I heard that testnets participants are earning good money since last year, is this better than crypto airdrops and bounties this days? Any testnet participants on here to testify this? I heard this from a friend and he claimed he got better results compare to airdrops and bounties.
I'm not sure what your friend is saying, because testnet is still in testing and it will have very bad problems for you, but if it really exists, why don't you ask your friend for that tesnet link, and you can put the link in this thread, for reference source that your friend actually got it. I don't think there's any really profitable projects at the moment, so be careful with things like this.
You are talking about caution. All caution should be in the fact that you should not go through testnets from the main wallets. To do this, it is better to create a new one for these purposes.