What were you told? Detailed descriptions of how lightning functions have been around for half a decade now. These problems are not new, nor do they break lightning.
Discussion
I'm prepared for high fees, using have a bunch of LN mobile wallets as well as some liquid.
What I meant is that many "influencers" have been saying LN is cheap & fast. Something like "I bought a coffee & the fee was less than 1 cent"
As i understand it high on chain fee periods also increase lightning fees.
They can, but not necessarily. It’s all dependent on the relationship you have with your channel partners.