Because your holdings are now (probably) worth more USD and you have more BTC? I don't understand what their argument would be. If you had just held and not sold out near the top, you'd have fewer BTC.
True, they could say that you got lucky this time and shouldn't try timing in general, but that's kind of irrelevant at this point.
Thats what I was telling them, their argument was this example that they made, that if I had bought 1 BTC for $200 and sold at $1100 then bought back around $800ish, that if Bitcoin went to $4000 per coin, than instead of having a profit margin of $3800 I would have a margin of $3200 on the original coin.
But, I told them that when I bought back in I had more Bitcoins than before, But they stuck with their argument, They have quite a bit in stock, And I believe they are thinking of Bitcoin as a traditional stock, So maybe I am missing something that works in stock and not Bitcoins?