Too many people are missing the point, we are talking about preserving bitcoin after we buy, and the reality is that there is no wrong or right answer when we talk about this because it all depends on the person and the tool they use.
If you go with self-custody and pick something wrong or you are not someone who understands it well then you will lose it, if you know it very well and can protect it very well then it would be great, if you do non-custodial but connect to all and never understand security then you will be able to lose it all, so you will not be doing that fine, but if we are talking about something different then we are going to end up with someone who understands it and careful and that's when they are going to do fine. These are all important parts.