I don't know if I'd say your statement feels incomplete or whatever I may assume but regarding the topic, the only system in bitcoin that I may define to be disadvantage is the volatility but I'd always take take to be a norms because there's no phase of investment that doesn't face pressures as a major challenge.
Bitcoin is just programmed in such a scalability of encountering increase and decrease but it's sure that its way forward is the direction of increments.
Just keep holding your bitcoin nomatter the phenomenon and you'd always account to the increase values.