Could you point to some articles? I've read a few Buffett articles and his suggestion seems to generally be - invest in an index fund and leave it alone.
Warren Buffet's own letter to stockholders is the best source for what he thinks. It is not stock picking (he parks some money in stocks, but that's not the bulk of what he does). He calls what he does "capital allocation" not "stock-picking"
His basic strategy:
1. Write insurance: that gives you tons of cash up front. Get good at setting the price right so you can make money on the float (using money in near term, paying it back in the future)
2. Now with all of this cash, invest in things (like utilities) that need big cash investment, but then pay-back forever (basic rent collecting). He likes things with big barriers to entry (moats)
He does not care if his company stock goes up or down, all he cares about is intrinsic value: the cash generated (now and in the future) and time value of money. His benchmark is the S&P 500 -- he wants to beat their intrinsic value.