[Avodah] What is the reason for the mitzvah of giving Mishloach Manos on Purim?

[Micha Berger]

On Fri, Feb 19, 2021 at 02:26:43PM +0000, Prof. L. Levine via Avodah wrote:
> From today's OU Kosher Halacha Yomis
>> A. This is the subject of a well-known dispute. Manos Halevi...
>> Terumas HaDeshen (1:111), however, explains that the purpose of giving
>> one's acquaintances Mishloach Manos is to ensure that poor people enjoy
>> a festive and lavish Seudas Purim. Although most people are not poor
>> and therefore do not need food given to them for their Seudah, Chazal
>> instituted that Misloach Manos be given to wealthy people as well,
>> so as not to embarrass the poor (Teshuvos Chasam Sofer OC 196).

I am not understanding the ThD's explanation.

After all, there is already a mitzvah in that niche. So:

1- On the first layer of the explanation, why then enact both mishloach
manos and matanos le'evyonim?
And
2- If we give MM to the wealthy so as not to embarass the poor, why not
JUST mishloach manos, rather than matanos le'evyonim embarassing them?

:-)BBii!
-Micha

-- 
Micha Berger                 It's never too late
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