[chris lewis]

Good review.
Yes, there are some entry level Chinese binos that do work, the main concern is making sure they are collimated well and there are no major defects in the optical train or build qualities.
I have used 5x Celestron Skymaster 15x70 and 4x were poorly collimated and were initially unusable.
Entry level binos will have distortions but if the on axis image is reasonably sharp they will give you a workable image.
FMC and Bak-4 prisms are desirable.
Most of the entry level binocular nomenclature is unreliable and usually misleading.
122m @1000m is 7 degrees Tfov which is 'wide' for a 10x50, so you will get noted field of view distortions at the periphery.
69m/1000m is 4 degrees, so you are correct if they fit the Crux whey must be at least 6 degrees and they cannot be 20x50.
Entry level Bushnell’s are noted for misleading information, however, Bushnell do produce a wide range of binoculars from 'do not buy' to top end stuff like there Japanese ED Elite series which give almost 'Alpha' like binocular views [at similar prices]. I have an Earlier Bushnell Japanese Elite 8x43 split bridge which is superb.
If you are on a budget yes an entry pair of binoculars will work but again I do recommend saving for a bino that has good optical and build qualities, like the Pentax’s below.
‘hollocore’ yes, the Pentax PCF 10x50’s are recommended binoculars. They are well built, W.P. / F.M.C. lens / Bak- 4 prisms. The image is sharp to edge. They do have a 'narrowish' 5 degree FOV which gives a Afov of 50 degrees, some may find restrictive. The Nikon 10x50 AE has similar specs and is also recommended, they do have a wider 6.5 degree FOV for a more panoramic 65 degree Afov. Of course due to the wider image they do have edge distortions.

Chris