Don’t think this bracket represents Morgan’s finest example of engineering design.
Full penetration laser welded equal flange tee sections in stainless steel are available off the shelf from certain steel suppliers in UK. This has to be both inherently stronger and cheaper than cutting/welding plates together.
An efficient tee bracket design normally adopts back plate and cantilever plate of equal thicknesses.
The screwed connection also looks suspect, as high tensile load will be induced in the screws by the very short lever arm resisting the bending moment applied to the bracket by the loaded luggage
Be interesting to see what Morgan’s replacement bracket looks like.