Thank you for your pertinent question, probably many other forum users share your doubts and gives the opportunity to explain our assumptions.

- If you have a transaction on a mined block that becomes an orphaned block and after some blocks gets reversed what is the security of this confirmation?  1 confirmation from TrustNet will have the same insurance of irreversibility of 6 Bitcoin confirmations.

Also, our objective is to eliminate entirely orphan-blocks even on a highly distributed mining network where some nodes have very low bandwidth.

- If you are running your own full node you can rely on unconfirmed transactions, our ultimate objective is that anyone can run a full node on their phone.
 
Ultimately every parameter is a trade-off and we are choosing the ones that we think best serve our intended users.