Danger, reading anything on the Internet is optional.
Smit0847, if I recall a moderator previously gave you a succinct reply to that effect.
The cancellation and delay threads are a guide to how particular airlines operate. For instance many passengers contemplating a trip between MEL and SYD or the east coast and PER may not otherwise know of JQ's relatively high cancellation rates on some of these sectors. The
www.nswtrainlink.info XPT train can be more reliable than JQ is late at night sometimes, with JQ passengers unable to travel until the next day.
Others may be unaware of the problems that QF (Qantaslink to be precise) has had in 2015 with its contracted B717s that operate between MEL and HBA. The QF thread shows how delays can on occasion compound through the day. Some may conclude that VA is on balance more reliable on this return sector down to and back from Tassie.
Still more travellers may not know that when ash is evident from that volcano erupting not far from DPS, there is a far greater chance of getting to that Indonesian island if one books on GA rather than on JQ or VA, while XT (with its very limited fleet) is also more likely to give the green light to flights when VA and JQ say 'no' or turn back flights that have almost reached DPS.
Another group of travellers may not know in advance how limited the turnaround time in MEL is between QF94 and QF93 back to LAX, or QF10 and QF9 back to DXB and LHR, or that at some times of the year there can be sandstorms that delay flights in DXB, a problem that when I last checked was not evident in HKG, ICN or SIN as major competing airports. Travellers may determine that it is preferable to book on an airline like SQ through southeast Asia to LHR and the rest of Europe.
Still more may not know that due to problems in mainland Chinese airspace (military alleged commandering of it or shutdowns at major Chinese airports), CX can have problems departing from HKG on time due to many connecting passengers being delayed.
Reports of storms tend to indicate that VA is more likely to divert aircraft than QF. That may be a coincidence, or just plain bad luck of aircraft being in the wrong place at the wrong time, or there may be another explanation - whatever, it can be useful for travellers to know that.
Some AFFers may conclude from the relative paucity of contributions to the cancellation and delay threads that airlines such as BI, JL, KE and OZ have pretty good punctuality. While they also do not have huge numbers of flights, concluding the aforesaid about their timekeeping would be accurate - this may lead to some AFFers deciding to book on one of these relative unknowns out of Oz for Europe, for instance, and they may well have a most satisfactory trip thanks (at least in part) to this newfound information.
More than 500 AFFers find the QF delays and cancellations thread useful (or at least they 'like' it, albeit sometimes through gritted teeth). Many others 'like' particular other airline delay and cancellation threads.
Not everyone is going to like each topic on a forum like AFF; I don't, but choose not to read those that hold no interest. You are at liberty to do the same.