Sanatana Goswami, a Gaudiya Vaishnava acharya quoted in his book Hari Bhakti Vilas, a smrti text for Gaudya Vaishnavas the following verses from Vishnu Yamala in the beginning of 5th Vilasa.
Agamoktena mArgeNa bhagavAn brAhmaNair api | sadaiva pUjyo.ato lekhyaH prAya Agamiko vidhiH ||3||
tathA ca viShNu-yAmale— kR^ite shruty-ukta-mArgaH syAt tretAyAM smR^iti-bhAvitaH | dvApare tu purANoktaH kalAv Agama-sambhavaH ||4|| ashuddhAH shUdrAkalpA hi brAhmaNAH kali-sambhavAH | teShAm Agama-mArgeNa shuddhir na shrauta-vartmanA ||5||
Commentaryof sanAtanaH: teShAm Agama-mArgeNa shrauta-vartmanety anena tair api Agamika-vidhinaiva pUjA kAryeti bhAvaH | tathA caikAdasha-skandhe [BhP 11.5.31] nAnA-tantra-vidhAnena kalAv api tathA shR^iNu iti | tatra shrIdhara-svAmi-pAdAH—nAnA-tantra-vidhAneneti kalau tantra-mArgasya prAdhAnyaM darshayati iti ||3-5||
Hindi translation is here:
In Satya yuga, Vedic rules, in Treta smarta method, in Dvapara through puranas, and in Kali rules prescribed by Agamas are to be followed.
The worship of Bhagavan is done following tantras primarily in Kali yuga and purification happens through this only.
And in Kali yuga, Brahmanas are impure like sudras and purification happens through methods prescribed in tantras not Vedic rules.
Does it mean that the process prescribed in other yugas are completely ineffective? Are the similar type of verses found in any other tantras?