This begs the question, what if we had only Bitcoin? Wouldn't the level of adoption outgrow what it currently is at the moment?
Any product will not get bigger if there are no other products to support it, and vice versa with bitcoin. The presence of altcoins in the industry made a big step in the trust for bitcoin, where people began to see the impact that bitcoin did not have on existing altcoins. Adoption occurs not because levels exceed, but because there is something more and people see bitcoin as a new hope amidst previously existing concepts that did not show freedom for someone to reach a stage of being more independent.
Do you think that altcoin is a major distraction to bitcoins adoption?
Personally, I don't see that altcoins are a big obstacle to bitcoin adoption. In fact, the presence of many altcoins makes this industry increasingly talked about, even though the effectiveness of altcoins has a big risk impact.