LN Node operators cannot confiscate funds it's a timelocked contract enforced by the main chain LN is designed to be trustless meaning you do not need to trust the node operators it is not in their interest to try and cheat you and if they do try then you can close the channel with all funds yours and theirs
Your channel counterpart's ability to steal your funds is limited only to your ability to create an on chain transaction before the channel timeout. Even if you do detect their stealing transaction in time, you need to get your claim mined into a block in time. With transaction backlog skyrocketing, how successful do you think that will be?