Thank you @franky1, I'll read it. I don't consider LN an ideal solution for Bitcoin to scale, too. I think it's over-complicated, but for micropayments it may work (I consider it appropiate for payments where you, using fiat, would use a prepaid/gift card).

What I was interested in, however, was an explanation in layman's terms if the Segwit concept itself (not LN and also not the "soft fork" itself as you point out in your other posting) had some negative impact on security or usability of Bitcoin. I know the Bitcoin Core page about Costs and Risks, but it doesn't seem like this list is really a list of "disadvantages" as most of it could be applied to all larger "jumps" in software development. If you or another participant of this discussion have a link for me, I'd be grateful if you share it.