Oh ok, I wasn't sure what point he was trying to make? Also didn't intend for my response to sound snotty or hateful, just asking for proof of a bow breaking from shooting fingers under instead of split.
I'm used to guys passing along heresay without proof or fact to back it up and the newer guys who don't know much about the subject yet may take it as truth because they read or heard somebody say it.
I haven't noticed any ill effects on my equipment or my nocks popping off at all. I use plastic nocks with a positive snap on the string whether I'm using carbons, aluminum, or wood. The only arrows I don't use plastic nocks on is the river cane and it's fairly simple to get a positive "snap" on the string with those as well by doing them exactly as you described. I did the first time I ever finished a cane arrow and couldn't believe how simple it was. I used a fine tooth sawzall blade to groove my nocks, then switched over to a piece of 180 grit sandpaper wrapped over a hacksaw blade to finish them out.
One thing that does need to be addressed is your nocking points on the string if you plan to shoot 3 under, 2 under, or 1 finger under. You need a string nock above AND below your arrow nock, because the arrow nock tends to slide down the string upon release giving you funky arrow flight making you think that it's out of tune when it really isn't. I learned this the hard way with hours of frustration trying to get perfect arrow flight from my bow, then somebody clued me in on putting another string nock below the arrow nock on the string and it all came together perfectly.
Some guys like to tie their nocks on the string and other guys use the brass string nocks, either one works fine as long as you have one above and one below the arrow nock and leave just a tad bit of room so they don't pinch the arrow nock at full draw.