fix: follow db centric model, avoid reading keys from .env

[abhinavk96]

Fixes #6347

[codecov]

Codecov Report

Merging #6352 into development will increase coverage by 0.12%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development    #6352      +/-   ##
===============================================
+ Coverage        65.25%   65.38%   +0.12%     
===============================================
  Files              287      287              
  Lines            14755    14725      -30     
===============================================
- Hits              9629     9628       -1     
+ Misses            5126     5097      -29

Impacted Files	Coverage Δ
populate_db.py	90.56% <ø> (+10.81%)	⬆️

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