I think the only hurdles my anonymity brought early in my career was the stupid three letter name I chose for myself. I’m sure I got rejected a lot because of it. Maybe editors thought it gimmicky and didn’t take me seriously. But once my work got out there it didn’t seem to matter anymore. The proof was there, anonymous or not. xTx, Stan, Steve or Samantha, the work was all that mattered, not the name attached to it.