not ~~~ too ~~~

1u01b01i00Not many Koreans today must be too proud02i02b02u00 of the economic and political developments in their country over the past 20 years. It has been a period where rapid economic development gave way to slower growth and increased foreign debts, resulting in the catastrophe of the late 1990s. 02br
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00The underlined part of the sentence...02br
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00Is that well written sentence? 02br
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00That is the same as "many Koreans today must not be too proud ~~~"02br
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00So, I feel "too" should be changed into "very"...02br
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00Also, I feel that there must be some better expresion without using "must".02br
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00And how about, "Not many Koreans today 01b01i01u00must be being very02u02i02b00 proud"?0-