Do you have any actual evidence for that? This chap is quite a well known amateur beer historian and suggests that it's not the case, and that there was a hop recommendation as well as an attenuation recommendation, but nothing about strength.
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"All we know from the evidence we do have is that Hodgson was one of the brewers exporting pale ale to India, and became the most famous. We can guess that Hodgson quite likely knew of the opinion expressed in books on brewing written in the 1760s that it was a good idea to highly hop ales for export to warmer climes. But there is no evidence at all that Hodgson was the one to discover this. Eventually that general knowledge about the need to hop beers for export to places like India apparently led to brewers to announce for sale something they called “Pale Ale prepared for the East and West India Climate” and similar designations, which was eventually shortened or summarised as “India Pale Ale”. The fact that Hodgson called its beer “East India Pale Ale” in 1835 means it was probably “prepared for the East India climate” and so more highly hopped: whether it was so prepared in 1793 we don’t know."