By "good knowledge" are you suggesting that holding require any special form of knowledge? Do you know that many Bitcoin tech experts may not even hold Bitcoin better than investors like MicroStrategy that are busy accumulating Bitcoin for years without selling. Basic knowledge of Bitcoin is all you need to be able to invest in Bitcoin and HODL.
In my local board, a lot of people started their Bitcoin journey this December as you can see in
this newbies introduction thread, these are people with little to no knowledge of Bitcoin and the tech behind it, but within a month or two from now, we would have guided them on how to start accumulating and holding Bitcoin while still acquiring more knowledge of it like I'm personally doing. If they have to wait till they get detailed technical knowledge of Bitcoin, a lot of them will be frustrated and will abandon it for other easier things. I don't think we should scare people with this knowledge thing because even in conventional career, people learn on the job.
For long term holding not necessary with good knowledge about bitcoin, but some people more confusing when investing in bitcoin and afraid what is the right time entry until bitcoin get up to higher price. Actually knowledge is most important when investing in bitcoin but need decision without doubt when invest their money in bitcoin.
I know OP not know well with bitcoin but he has braveness for investing in bitcoin and learn later detail about bitcoin, first you need to make investment in bitcoin and then you can learn or get knowledge with bitcoin after having bitcoin investment assets, what for have more knowledge but still get doubt when investing their money in bitcoin.