In egneral , no it is not a huge problem. it can tough be a problem for growing adoption, just think about it , if the team is not able to explain their ideas, concepts and tools they want to provide in simple manner, most wont listen to them anyways because of how complicated it is. It can be a red flag in a situation when team is just throwing key words together, just to generate hype arounf them , but in reality they have nothing to show for it.
I believe it can be a problem for adoption if the project's token gets too complicated to use/acquire, but people really don't care if they understand the project's technicalities. Actually most investors don't understand how bitcoin, blockchain and crypto universe works, but everyone still uses this without any issues. As long the project is simple to use (practical) and is profitable there won't be any adoption issues on short run, but on long run it also has to be professional, innovative and useful from a real application perspective.