I also had a DS who went through 11+ last year and am a bit surprised at how quiet the entire MN is this year. I still browse MN occasionally as I still have another DS coming up for 11+ in a few years' time.
Some of the above names do look familiar to me, and while I can't remember every post made by @PreplexJ last year, I remember quite a number of his/her posts were quite objective and useful and perhaps sometimes he/she got a bit "aggressive" was when he/she was too eager to counter others' misleading information. My impression is that he/she is willing to share information/opinion (even if subjective) for the benefit of prospective parents, and certainly not with any hidden motive/agenda.
Can't say everyone was like that. I still remember one very active mum last year whose DD was in year 5 (so will be sitting this year instead) began with humbling requesting advice in the early posts, to, in the later stage educating everyone on how to prepare 11+ and why you should not over prepare and not to focus only on the very selective schools. Somehow, she disappeared this year, or maybe using another name?
Having gone through this process last year, my advice is to stay calm and don't panic. I know it is stressful, but what I observed last year was that there were very few surprises at the offer date. Almost everyone got the offers they expected, especially those at preps, where they already got advice from the heads. Don't feel intimidated by those numbers, like 1400 applying for LU, 1000 for Ibstock and KGS, or the small number of places for some schools. There were, in the end, very few surprises.