I asked myself, is Cryptocurrency going to be an abode for scammer and financial looters who has gone outrageous against the law and find crypto as a "home of no query" as to where a huge amount of Bitcoin stated above could just landed in without a background check (investigation) of the person involved with such huge amount source.
It's not going to be. It is already the haven of scammers. Try tracing someone who stole your bitcoins and one who manage to get your bank details. Even cash are less fungible than CryptoNote coins such as Monero, since each banknote has a unique code written for this very reason.
Realize that this is an incident where the teenager was probably unaware of how to hide himself. There are probably
uncountable similar occurrences where the scammers were never caught.
I also understand this is one of the reasons why some countries are yet to adopt bitcoin because their believe in that crypto is a fraudulent game and those engaged in it are solely scamming unscrupulous individuals.
Nah. The reason they don't want bitcoin is because they'll have much less control over their citizens. They just justify it this way. It's the same when they require KYC relentlessly. Not, because they want to protect you over the dangers of money laundering. They just need control and there they have it.
1. Is there a limit to certain amount of bitcoin per transaction each type of wallet can accommodate?
You can't send more than 21,000,000 BTC. That's the only limit.
(For non-custodial wallets)2. How can the menace of scammers, fund looters and embazzler using Cryptocurrency as a covering to hide and safeguard their looted currency end, knowing fully that going to the banks they will be apprehended?
This is difficult to understand, but I guess you want to know how the scamming incidents will reduce? Hard to tell. Depends on the governments' decision to adopt cryptocurrencies or not.