I added "2x per year" trend lines to his chart...

It looks like his 200-weeks graph follows that "100% a year" trend quite nicely.
It's just too many people started talking about "200% a year" lately, even Saylor, which is annoying.
Saylor may be talking about instantaneous price value, not averages, or we don't know his averaging parameters, or he may be excluding certain events as outliers. It's all a matter of interpretation, averaging horizon, etc.
Some predictions talk about $400k/BTC at the end of 2021, so that's a gain of 1200% for 2021 alone... Wild, sure, but does King Daddy care?
Personally, I consider a "stable" price of $100k/BTC by the end of 2021 to be a realistic, healthy, and pretty damn good scenario. That's a gain of 230% for 2021, which pretty much agrees with Saylor's Crystal Ball
TM. By "stable", I mean safely above $100k, say, $110k-$130k, with the usual volatility and ant-pump/dumpenings.