Arthavada and disbelieving in the Efficacy of Nama-Sadhana in Kali-Yuga as the most abominable sin

First I will outline this article in brief: 

Theme: arthavada 

Subtheme: arthavadis or persons who suppose that statements about the Efficacy of The Nama-Sadhana in Kali-Yuga are just exaggerated praise
Where is mentioned: mentioned by Lord Krishna in "Shree Narada-Purana"

Subtheme (actually, main theme): Pramanas from BhaskaraRaya Acharya crushing arthavadis and explaining why arthavadis are most abominable sinners in Kali-Yuga

अर्थवाद (arthavAda) means

Mantras for Yoga and Asanas

CRUCIAL: This article of course tells about Manasika (silent, in mind) recitation of Mantras during Yoga, not Vachika (loud) recitation. Another crucial rule: Mantra does not exist without Dhyana, so please don't forget to resort to The Dhyana of Your Adored ParaIshwari / ParaIshwara. 

Question: "Which Mantras I can use while doing my Yoga and Asana complexes?"

Reply: "Thank you for the superb question, as Yoga without Bhakti-compound is just a

Shri MahalakShmi AkSharamalika Namavali and SPRING MANTRA OF SHREEMATI MAHALAKSHMI-DEVI

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I have found This Very Beautiful Namavali on http://sanskritdocuments.org/ about 2 weeks ago. 

Unfortunately, the source is unknown, I mean I can't trace this Namavali to any Shakti-Tantra. 

The NamaVali is very exceptional, as All These 136 Names of Shreemati Lakshmi-Devi are based on "लक्ष्म्यै" (LakShmyai) Names. 

This Namavali was a part of my spring Bhakti-Sadhana for around 2 weeks until I have inlcuded in my Bhakti more Orthodox Shree Sampradaya Shreemati Goda-Devi and Bhagavan Shree Venkateshwara Namavalis and Ashtakas. 

As for most Beautiful Names from this 136 Namavali, I loved the following Mantras the most (some Mantras are the Mantras of Shreemati DurgaLakshmi-Devi):

025. ॐ उमालक्ष्म्यै नमः ।

025. OM umAlakShmyai namaH |

029. ॐ ऐश्वर्यलक्ष्म्यै नमः ।

029. OM aishvaryalakShmyai namaH |

062. ॐ दुर्गालक्ष्म्यै नमः ।

062. OM durgAlakShmyai namaH |

075. ॐ पद्मलक्ष्म्यै नमः ।

075. OM padmalakShmyai namaH |

111. ॐ वसन्तलक्ष्म्यै नमः । 

111. OM vasantalakShmyai namaH | 

(YES, SPRING MANTRA OF SHREEMATI MAHALAKSHMI-DEVI)

131. ॐ हृदयलक्ष्म्यै नमः ।

131. OM hRRidayalakShmyai namaH |

What does Name भगवती ("Bhagavati") mean?

Jankinath Kaul Kamal explains the meaning of This Name of Shreemati Parvati-Devi in his glosses to "Shreemati Bhavani-Sahasranam" from "Shree Rudra-Yamala-Tantra":

१७७. भगवती

177. BhagavatI

"The Supreme Divinity.

In accordance with