Removing 2x4 strapping and still meeting Ontario building code
No, RC-1 channels are not replacements for strapping, bridging, etc., even though it will be installed across the face of the basement ceiling and the strapping, etc. is installed 6’-11” o.c. (Please note that the strapping MUST BE fastened to the sill or header at ends. This is so the joists won’t “parallelogram” over when fully loaded.)

Yes, SOLID blocking is an acceptable substitute for strapping, bridging, etc., (but very time consuming. )