I'll be very nice and explain your ignorance as gently as I can.
You obviously have no idea of civilian trans-oceanic flight procedures. None.
{KAL-007} "climbs briefly {?-G.S.} to a more economical cruising height."
This is STANDARD. While on the NoPac (North Pacific) routes, altitude is used for aircraft separation. So, in general they DO NOT want you to change altitudes. Out on the tracks, you are not talking to an Air Traffic Control center; rather your communications are relayed to ATC through an HF radio service. Everything is quite delayed.
As you burn fuel and get lighter, the higher altitudes are much more economical. The Flight Management System computes when to climb and company rules are to follow FMS data. So it is ROUTINE once you are back under an Air Traffic Control Center, to ask for a higher altitude.
"Let's eat later."
Most crews eat either prior to leaving for the airport (hotel, local restaurant) which would be about 3-4 hours prior to departure. The passengers get served FIRST, so rarely is food offered until about 5-6 hours into an overseas flight. Captains, particularly on Asian airlines, DO determine when the crew will eat. It would be common on an Asian airline. On US airlines, most Captains allow everyone to pick their own time.
"... entering prohibited airspace above the Soviet Union for the second time that night."
Yeah, it was. Your incompetent air defense let him cut across the tip of Kamchatka prior to intercepting him. and shooting him down.
The entire flight path is consistent with a failure to engage the INS/autopilot interface after the coast-out nav accuracy check leaving Alaska.
Which is EXACTLY what the ICAO determined after the Soviets gave the FDR to them.
Not about the US recon plane on a parallel course (this is a fact),
No, it's not a fact, it's fiction.
KAL 007
crossed the RC track but never paralleled it. No RC ever flew a track like KAL flew. Ever.
KE007, still steered by its compass, crossed the track of an American RC-135 reconnaissance aircraft that was on its way home from its duty station, flying over international waters, two hundred miles east of the Kamchatka Peninsula. The RC-135, a modified Boeing 707, was crammed with electronic gear designed to monitor a Soviet ballistic -- missile test that had been scheduled for that same night but had subsequently been cancelled.
Although the RC-135 flight was unpublicized, it was not illegal or especially sinister: such flights were part of the "national technical means of verification" mentioned, though coyly not described, in the Strategic Arms Limitation Treaty then in force between the superpowers.
The RC-135 completed its leisurely sentry run off the Kamchatka coast, well north of KE007's track, and was back on the ground on Shemya Island, one of the Aleutians, a full hour before the shootdown.
Verified by people I knew flying the RC-135S that night.
So, again, you have no clue.
not about the US spy satellite (this is also a fact),
Nah, it's just more Soviet BS; they planted it in the press.
The Sky’s No Limit to Disinformation