1.  Lack of Precision: vw units can lead to imprecise font sizes, especially on very large or small screens. This is because the font size is based on the viewport width, which may not always correspond directly to the user's reading area or the physical size of the device.

2.  Limited Control: Using vw units may limit fine-grained control over font sizes, especially in situations where specific typographic requirements or design constraints exist. It can be challenging to achieve pixel-perfect font sizes using vw units alone.

3.  User Preferences: While responsive typography is desirable, some users may have their own preferences for font sizes that differ from the default behavior provided by vw units. Overriding user preferences can impact usability and user experience. >>> Try it yourself, Update your preferences in the Browser Setting Font Size.

4.  On big screen like 4K, or 8K Tv, The user won't be able to Zoom IN/OUT, which make the website not useful at all, Try Zooming IN/OUT on other website you will see how helpful it can be to many people who has difficulty reading. >>> Try it yourself, Open on a 4K Screen or a small phone, Then try to Zoom IN/OUT, & do the same on another page of our Website.

5.  Our designer designed using PIXEL values for fonts spacing and etc. Once we use Flexible font sizes, Then what do we do with all the Spaces? & If we don't fixed those Spaces the design will completely mess up, No assurance that the final website will be Pixel Perfect to the Figma Design.

6.  It will take a considerate amount of time to change all the Font sizes, & Spaces, Images sizes, container sizes & etc. Basically means design everything using Flexible Sizes.

7.  Depending on your screen size These text may have been very hard to read & focus. Change your screen size & see when it is really pleasant to read.