I do talk about leveraging all the time but usually I talk in terms of %Inv. Just to make sure you understand what I am saying,
If I take $10,000 cash and buy $15,000 of IWM, I am 1.5 leveraged or 150% invested.
If I take that same $10,000 and buy $5,000 of TNA, I am still 150% invested because I am using IWM as my gauge for investment level.
After reading the article, it changed my thinking and I now agree with you that BRK is not a good investment tools, not for the reasons that you stated, but the ones I stated in my post. Bottom line, neither of us will be investing with him.
I personally hate dividends. They are a pain the ass because it is just something else I have to deal with. SPY announced a dividend on Dec 16th, but they are not going to actually pay it out until Jan 31. So to not lose out on the gains for 6 weeks, that means I had to invest the dividend I am due back on Dec 16th and then pay the interest until I am paid back six weeks later. Plus I also have to pay commissions to buy more stock.
So to avoid all this stuff, I usually just stay invested in a 100% account about 102-103%, especially right now with interest rates so low.
I then just let the dividends accumulate a bit before I act.
If you are one that likes to take the dividends to spend, then I understand why you might like dividends.