What is the motivation of Technicolor?

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SUMMARY

The motivation behind Technicolor is to replicate Quantum Chromodynamics (QCD) at higher energy scales, specifically to account for the W boson mass. This theory posits that a new interaction, termed techni-QCD, operates at the TeV scale, providing a mechanism for the W mass term, estimated at around 20 MeV, through chiral symmetry breaking. However, this approach raises questions regarding the mass of other particles, as scaling QCD does not adequately explain their lightness.

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Now I am reading on Technicolor. Unfotunately I am not clear yet what is the exact motivation of Technicolor? Please help me to clarify this. Thanks in advance.
 
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There is a QCD component to the W mass. Chiral symmetry breaking gives you a W mass term of perhaps 20 MeV.

The idea of technicolor is to replicate QCD at a high enough scale so that this techni-QCD is responsible for all of the W mass. If you just scale up QCD, you get a scale for this new interaction in the TeV ballpark.
 
But of course with this scaling to higher energies you are no longer able to explain why other particles stay light
 

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