It is my view that Hindus should not reform Hinduism under pressure from materialistic thinking, so as to change its basic nature. Hindus should not denigrate Veda or Gita, since these are the foundations. It is also my view that Hindus should distinguish between Varna (spiritual Caste designations as created by God as per distribution of guna and karma) and Jati (Socio-physical groups implemented by humans in India). There is some correspondence between the two but the correspondence is not 100%. Especially, the conflicts arise with respect to group affiliations and these are related to Jati.
Varna relates to spiritual categories and is mostly translated as Caste. Jati relates more to Casteism.
Mis-understanding arises because most of us analyse scriptures from the point of view of individuals. Vedic dharma is not about that. Vedic dharma is first about Brahman, which is indivisible Eko -- One without a Second. The apparent multiplicities of numerous Jiva-s with their own distinct qualities is only phenomenally true. The absolute truth is indivisible eko brahman.
Now, in respect of the manifestation of the Brahman called Purusha, what can the Varna mean? In a single body, has anyone seen legs fighting arms and arms fighting eyes for supremacy? Has anyone seen fight of Castes in a single body?
In a body, a talk of assigning supremacy and sovereign independent power to a functional organ is not meaningful. Similarly, in non-dual indivisible Brahman, imagining the four Castes as independent separate entities/groups with autonomous power is foolish.
Varna, is a category system created by God
RV 10.90
11. When they divided Purusa how many portions did they make?
What do they call his mouth, his arms? What do they call his thighs and feet?
12. The Brahman was his mouth, of both his arms was the Rajanya made.
His thighs became the Vaisya, from his feet the Sudra was produced
Gita 4.13
The four-fold caste system has been created by Me according to the differentiation of qualities and actions. Though I am the author, know Me as non-doer and eternal.
At the same time God Himself instructs us as below:
Gita 5.18
The humble sages, by virtue of true knowledge, see with equal vision a learned and gentle brāhmaṇa, a cow, an elephant, a dog and a dog-eater [outcaste].
Gita 13.29
Because he who sees the same Lord equally dwelling everywhere does not destroy the Self by the self; he goes to the highest goal.
A real sage is one who can See the Sameness of Ishwara (God) underlying very diverse names-forms of the phenomenal world. But, IMO, there is no reason why true Hindus should abandon a verse enshrined in Purusha Sukta of Rig Veda (and also in Gita).
