What Arya Samaji Bhai log and other "Scientific" variant of Hindus will say about this. It's from Skanda Purana.

And combine abv with this from Gita.
तस्माच्छास्त्रं प्रमाणं ते कार्याकार्यव्यवस्थितौ।
ज्ञात्वा शास्त्रविधानोक्तं कर्म कर्तुमिहार्हसि।।16.24।।
(अतः तेरे लिये कर्तव्य-अकर्तव्यकी व्यवस्थामें शास्त्र ही प्रमाण है,ऐसा जानकर तू इस लोकमें शास्त्र-विधिसे नियत कर्तव्य कर्म करनेयोग्य है।)

That's why I have said many times this Arya Samaji intellectual gymnastic won't help. PAdres and Commies will strip you down quoting your own Scriptures.

Therefore, develop correct understanding of Varnashrama as suggested here, accept wrongs done and move on.
Scriptures themselves say there is no Varnasharma in Kaliyuga due to rise of Tamoguna.
बिना स्वधर्मारुढ़ तपनिष्ठ ब्राह्मण के कैसा वर्णाश्रम? https://twitter.com/Hiranyareta/status/1287424665820987392?s=20

I know. But I see many quoting चातुर्वर्ण्यं मया सृष्टं गुणकर्मविभागशः (Gita 4:13). So abv is in that context. https://twitter.com/pareek_devansh/status/1287764365312106498?s=20

I knew that this linguistic argument will come questioning the meaning of the quoted shloka as stated in Hindi translation so I will quote the whole chapter for the proper context. But why people get upset when I call it protestant padre argument?
1/ https://twitter.com/ManuPutra/status/1287783282596122624?s=20

Here is the full chapter.
2/