1) I do not consider this a fault. When in Gegetown, I can tell you the majority of rifles put in for repair were because troops tried to clean something in the field

Frankly, if the bolt gets wet on campaign, it will work until the battle is over. If it breaks later or rusts, plenty of time then to get the unit armorer to replace a spring - or even the whole bolt. Compared ot the Mauser bolt, there are very few points of egress for debris, mud, etc. on the enfield bolt. The mauser has to be taken apart easily - it fouls easy in the first place.
2) When have you ever had a non-functional rifle due ot a blow to the trigger guard? Short of artilery shrapnel, unlikely to happen - you likely would not survive it anyhow. That being said, a non-issue with the No.4Mk1/3 or /2 rifle or the No.4Mk2.
3) The battle sights were for battle. The fine sights for target shooting. In practise, far more guns had the quick-adjust rear sight or the 2-position flip, both superior the the K98k sight.
4) ??? Hardly. Maybe on a POS sporter, but I've never seen one work loose on an original. Impossible on a proper No.1, on a No.4 it's unlikely with the lock washer in place. Never seen one loosen to the point it would not do its job.
5) Right... go watch the video of the Lee vs. the Mauser above. It matters.
6) WHAT??? Have you ever actually owned a Lee Enfield?
7) WHAT??? OK, I'll bite. What are you using to remove the lock screws and action screws? Telekinesis and faith in the Fuhrer?
I MUCH prefer the fit, finish and shooting experience of the K98k over the Lee Enfield. It's a much better shooting rifle, it's better made (pre-43, anyhow), feel better in-hand, and is all-round a joy at the RANGE. In a muddy hell, I'll take a No.4, thanks.