Hes offering this example as a offshape take-out (with the style of showing majors only) and he says that as north he would pass twice and south double 2S in the balancing seat ?!?
In most sequence hes rather conservative (not opening 11 pts bal, not overcalling on 4 cards, 1NT overcall as 16-19) yet he describe void,Kx,AT98xxx,9xxx as a 1st seat 1D opener.
...but it is an attractive thing to double with a limited hands with a long major.. (then he goes on how it may backfire) and end with his rules to make a neg double after 1D--(2C)
1- at least 4-4 in the majors
2- one majors and GF values
3- at least a 4card limit raise in D.
?!?
Here he is suggesting to bid 2H and not 2D. Honestly ive would have bid 2D without even thinking (wich is pretty bad) , I do see some logic in that partner is more likely to have 5H/4D than 5D/4H or 5H/2S than 5D/2S but with a minimum hand bidding 2H seem just too encouraging. I have no strong opinion on 2H VS 2D but i do find it a bit offbeat.
The corollary is that with
hes bidding 2S wich I really dislike.
There is a lot a good ideas so its a good read its just that so far im a bit perplexed.