Disagree. The area of philosophy I'm most familiar with (phil sci) is generally very easily understandable. I'm also not even sure this is a substantial objection. In many areas of learning, there are specialized vocabulary that take a lot of effort to understand. That's due to the deepness of the areas. Math is one example of this. I actually have more trouble reading papers in math, which is my own field, than I often do in biology (although this may be connected to the fact that I don't read highly technical papers in bio.) So even if your claim were true, it isn't at all clear to me why it would be relevant.

As a simple status issue, if you can get the philosophers to take you seriously, it will cause the people who aren't philosophers but who respect philosophy to take you more seriously.